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Francois Bergeron

A model for device development | Researchers at the Stanford University Program in Biod... - 2 views

  • clinical need.
  • estimated market size and clinical impact associated with each.
  • prior art related
  • ...4 more annotations...
  • barriers to further development exist from an intellectual property perspective
  • Inventors must also determine if they are in a position to efficiently seize the market opportunity.
  • regulatory considerations, reimbursement strategies, intellectual property, and business development objectives. This leads to Phase I of the development model.
  • R&D in Phase II is responsible for generating early concepts. Brainstorming sessions are often held during this stage of development with members of R&D, marketing, and physician consultants. Computational analyses, such as stress and flow studies, are conducted to further understand the behavior of a proposed device. The team often develops a 3D CAD model of a proposed device
  •  
    medical device development steps
Steve Bosserman

Hacker School - 1 views

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    Students at Hacker School might be interested in helping SENSORICA develop Google scripts or sensor applications.
Philippe Comtois

Funding: Canada Summer Jobs | HRSDC - Service Canada - 0 views

  • Please note that the period to apply for Canada Summer Jobs 2014 will be from December 2, 2013 to January 10, 2014
  • Jobs funded under CSJ must be from six to sixteen weeks in duration.
Tiberius Brastaviceanu

Google Apps Script - introduction - 0 views

  • Google Apps Script provides you with the ability to build a user interface for displaying or capturing information.
  • Viewing the Available User Interface Elements
  • Your scripts can display the user interface in two ways:
  • ...48 more annotations...
  • from a Spreadsheet
  • from a Site
  • As a stand-alone servlet
  • Deciding Whether to Run a Script from a Spreadsheet or as a Service
  • The built-in code autocomplete functionality in the editor requires you to type the trailing period that follows app.
  • Plan the script. What tasks should the script accomplish?
  • Write down the specific information you want to display to or collect from your users.
  • Draw the user interface
  • Determine what the script and interface should do in response to any user input.
  • Determine the conditions for exiting the script.
  • you need a UiApp application object to contain the user interface elements. After you create the UiApp application object, you can add buttons, dialog boxes, panels, and other elements to the UiApp application object.
  • The general syntax for these operations is as follows:
  • To create a UiApp application object, use the syntax var your_application_object_name = UiApp.createApplication();
  • To create a user interface element and associate it with your UiApp application object, use the syntax var your_ui_element_name= your_application_object_name.createElement_Name();.
  • To add one user interface element to another
  • use the syntax your_ui_element_name1.add(your_ui_element_name2);
  • a button with the text Press Me on it:
  • creates a vertical panel.
  • other kinds of panels
  • pop-up panels, stack panels, focus panels, form panels, and so on.
  • code for displaying your button on the panel:
  • add the panel to the application:
  • nstruct Google Apps Script to display the interface elements:
  • You can create the user interface elements in any order.
  • the display order
  • Creating the elements and adding them to your application are separate steps requiring separate instructions.
  • a short script that does nothing but display a panel with a button on it.
  • You can chain together setter methods
  • sets its title
  • set the size of the object:
  • how to use Grid objects and the setWidget method to create a more complex layout and also how to create text boxes and label them.
  • To make a user interface useful, you need the ability to update a Spreadsheet with information a user enters from the interface.
  • a short script that responds to an action in the interface by updating the Spreadsheet.
  • looping structure in the script to keep the panel displayed and active
  • Server-side means that the actions are performed by a server
  • same script, with functions added that enable the form to be used multiple times before a user chooses to exit.
  • script collects some information from text fields on a panel and writes that information into the Spreadsheet.
  • You can make a script's user interface available to users from inside a Spreadsheet or Site or by running it separately as a service.
  • how to make the user interface as a service.
  • A script that provides a stand-alone user interface must invoke the doGet(e) function or the doPost(e) function for an HTML form submit.
  • A script that provides the user interface from the Spreadsheet invokes doc.show(app).
  • The doGet(e) function takes the argument e, passing in the arguments for the user interface, including the user name of the person invoking the script.
  • After you write the script, you publish it as a service. During the publishing process, you define who has access to the script.
  • In a Google Apps domain, you can publish the script so that only you have access or so that everyone in the domain has access.
  • In a Google consumer account, you can publish the script so that only you have access or so that everyone in the world has access.
  • Updating a Spreadsheet from the User Interface, the user interface is displayed from the Spreadsheet where the script is stored. The following code defines how the user interface is displayed:
  • Here's the skeleton code for displaying a user interface as a stand-alone service:
  • some aspects of the two ways to display a user interface.
Tiberius Brastaviceanu

Google Apps Script - introduction - 0 views

  • script that you want to run every day at a specific time
  • script that should run after a user submits a data-collection form.
  • Google Apps Script provides simple event handlers and installable event handlers, which are easy ways for you to specify functions to run at a particular time or in response to an event.
  • ...39 more annotations...
  • let's consider the terminology we use for events
  • event triggers
  • triggers
  • in response
  • event handler
  • event
  • onInstall function
  • onOpen function.
  • onEdit function
  • the simple event handlers are restricted in what they are permitted to do:
  • The spreadsheet containing the script must be opened for editing
  • cannot determine the current user
  • cannot access any services that require authentication as that user
  • Calendar, Mail and Site are not anonymous and the simple event handlers cannot access those services.
  • can only modify the current spreadsheet. Access to other spreadsheets is forbidden.
  • see Understanding Permissions and Script Execution.
  • The onOpen function runs automatically when a user opens a spreadsheet.
  • add custom menu items to the spreadsheet's menu bar.
  • onEdit function runs automatically when any cell of the spreadsheet is edited.
  • record the last modified time in a comment on the cell that was edited.
  • The onInstall function is called when a script is installed from the Script Gallery.
  • setting up custom menus for the user.
  • the script can call onOpen from onInstall.
  • Installable event handlers are set on the Triggers menu within the Script Editor, and they're called triggers in this document.
  • When a specific time is reached
  • When a form is submitted
  • When a Spreadsheet is edited
  • When a Spreadsheet is opened.
  • They can potentially access all services available to the user who installed the handler.
  • are fully-capable scripts with none of the access limitations of simple event handlers
  • may not be able to determine which user triggered the event being handled
  • The spreadsheet containing the script does not have to be open for the event to be triggered and the script to run.
  • You can connect triggers to one or more functions in a script. Any function can have multiple triggers attached. In addition, you can add trigger attributes to a function to further refine how the trigger behaves.
  • When a script runs because of a trigger, the script runs using the identity of the person who installed the trigger, not the identity of the user whose action triggered the event. This is for security reasons.
  • Installing an event handler may prompt for authorization to access
  • An event is passed to every event handler as the argument (e). You can add attributes to the (e) argument that further define how the trigger works or that capture information about how the script was triggered.
  • an example of a function that sends email to a designated individual containing information captured by a Spreadsheet when a form is submitted.
  • With Google Apps, forms have the option to automatically record the submitter's username, and this is available to the script as e.namedValues["Username"]. Note: e.namedValues are only available for Google Apps domains and not for consumer Google accounts.
  • The available attributes for triggers are described in the following tables.
  •  
    script that you want to run every day at a specific time
Tiberius Brastaviceanu

Google Apps Script - introduction - 0 views

  • control over Google products
  • can access and control Google Spreadsheets and other products
  • scripts
  • ...44 more annotations...
  • run directly on Google servers in order to provide direct access to the products they control.
  • can also use Google Apps Script from Google Sites
  • Google Apps Script Template Gallery
  • Google Apps Script Blog
  • guide contains the information you need to use Google Apps Script, a server-side scripting language, based on JavaScript, that runs on Google's servers alongside Google Apps
  • enable varying degrees of interactivity among the applications
  • easy enough to use that you don't have to be a programmer to create scripts.
  • use it to automate complex tasks within Google Apps
  • You don't have to be a programmer to use Google Apps Script
  • A script is a series of instructions you write in a computer language to accomplish a particular task. You type in the instructions and save them as a script. The script runs only under circumstances you define.
  • The Google Apps Script API provides a set of objects. You can use these objects and their associates methods to access Google Docs and Spreadsheets, Gmail, Google Finance, and other Google applications.
  • To run a script, you must first add the script to a Google Spreadsheet or Google Site using the Script Editor.
  • You can retrieve information from a wide selection of Google Apps and Services and from external sources, including web pages and XML sources. You can use Google Apps Script to create email, spreadsheets, pages on Google Sites, and files in the Google Docs Document List.
  • The instructions in a script are grouped into functions.
  • objects
  • methods
  • for such tasks
  • Create pages on a Google Site
  • Customize a Spreadsheet
  • Send email based on information in a Spreadsheet
  • You can manipulate
  • numeric
  • financial
  • string
  • an XML document
  • controlling data in the following applications
  • Spreadsheets
  • Google Document List
  • Contacts
  • Calendar
  • Sites
  • Google Maps
  • create and display interactive user interface elements
  • interact with relational database management systems
  • create folders, subfolders, and files in the Google Docs document list
  • access to user, session, and browser information
  • access to web services
  • extract data from XML documents and then manipulate that data
  • obtain translations of text from one language to another
  • send email
  • UrlFetch services
  • encode and decode strings and format dates
  • store properties on a per-script and per-user basis
  • create, delete and update contact information for individuals and for groups in Google Contacts
Tiberius Brastaviceanu

Google Apps Script - introduction - 0 views

  • installing and running existing scripts from the Script Gallery
  • Spreadsheet
  • Insert
  • ...27 more annotations...
  • Install
  • Close
  • Choose a script and click Run
  • The onOpen function adds the Finance menu and the menu item Get Stock to the Spreadsheet
  • the onOpen() function
  • code function onOpen() declares the function and its name
  • code between the curly braces is the code that performs actions when you run the onOpen() function
  • the SpreadsheetApp.getActiveSpreadsheet method to obtain a spreadsheet object representing the currently-active spreadsheet.
  • invoking methods on ss, the script can manipulate the currently-active spreadsheet.
  • method is code that is associate exclusively with a class and performs a particular task on objects of that class
  • insert the column headers into the corresponding cells
  • the getRange() method
  • setValue() method
  • identify
  • arguments
  • You use arguments to pass data to a method.
  • String data
  • is in quotation marks
  • line var row = 2; creates a variable row with an initial value of 2
  • a counter
  • while (true) loop
  • if loop
  • if (!symbol) break; causes the script to exit from the while loop when there is no stock symbol in the variable symbol
  • The exclamation point states a negative (not) condition
  • continues to run, incrementing the row each time until it reaches an empty row
  • the break causes the script to exit from the loop and finish.
  • To comment out the code, put two forward slashes at the beginning of each line:
Tiberius Brastaviceanu

Food Security and Climate Change ISIB-11-2014 - 0 views

  •  
    "Topic: Coordination action in support of the implementation by participating States of a Joint Programming Initiative on Agriculture, Food Security and Climate Change"
sebastianklemm

DOEN Foundation - 1 views

  •  
    The DOEN Foundation supports pioneers who work hard to establish a greener, more socially-inclusive, and more creative society, in which: > the capacity of the planet is the starting point (green); > everybody can participate, where people work together and help each other with respect for individual needs and possibilities (socially inclusive); > art and culture are at the heart in the belief that society can not do without (creative). The DOEN Foundation supports initiatives that focus on one of these three themes. Within these themes, we work with programs which specify the type of initiatives we support.
sebastianklemm

Fresh Ventures Studio - 0 views

  •  
    "Fresh Ventures is a venture building program and startup studio based in The Netherlands. We co-found companies with experienced professionals and entrepreneurs to address systemic challenges in the food system." (Direct feedback upon inquiry: "At Fresh we're focusing on pre-idea and pre-team, so the maturity of this solution is already too progressed for us, but it's exciting to see the development.")
Tiberius Brastaviceanu

Designing the Void | Management Innovation eXchange - 0 views

    • Tiberius Brastaviceanu
       
      This is about self-organization, putting in place bounderies and internal mechanisms to make the the system self-organize into something desirable.  You can see this from a game theory perspective - how to set a game which will drive a specific human behavior. 
    • Tiberius Brastaviceanu
       
      This is about self-organization, putting in place bounderies and internal mechanisms to make the the system self-organize into something desirable.  You can see this from a game theory perspective - how to set a game which will drive a specific human behavior. 
    • Tiberius Brastaviceanu
       
      Very similar to SENSORICA, an environment of entrepreneurs. The argument against this is that not everyone is a risk taker or has initiative. The answer to it is that not every role in the organization requires that. 
    • Tiberius Brastaviceanu
       
      Very similar to SENSORICA, an environment of entrepreneurs. The argument against this is that not everyone is a risk taker or has initiative. The answer to it is that not every role in the organization requires that. 
  • The system is not made up of artifacts but rather an elegantly designed void. He says “I prefer to use the analogy of rescuing an endangered species from extinction, rather than engaging in an invasive breeding program the focus should be on the habitat that supports the species. Careful crafting of the habitat by identifying the influential factors; removing those that are detrimental, together with reinforcing those that are encouraging, the species will naturally re-establish itself. Crafting the habitat is what I mean by designing the void.”
  • ...75 more annotations...
  • It is essential that autonomy is combined with responsibility.
  • staff typically manage the whole work process from making sales, manufacture, accounts, to dispatch
  • they are also responsible for managing their own capitalization; a form of virtual ownership develops. Everything they need for their work, from office furniture to high-end machinery will appear on their individual balance sheet; or it will need to be bought in from somewhere else in the company on a pay-as-you go or lease basis. All aspects of the capital deployed in their activities must be accounted for and are therefore treated with the respect one accords one’s own property.
    • Tiberius Brastaviceanu
       
      So they have a value accounting system, like SENSORICA, where they log "uses" and "consumes". 
    • Tiberius Brastaviceanu
       
      ...
    • Tiberius Brastaviceanu
       
      So they have a value accounting system, like SENSORICA, where they log "uses" and "consumes".  
  • The result is not simply a disparate set of individuals doing their own thing under the same roof. Together they benefit from an economy of scale as well as their combined resources to tackle large projects; they are an interconnected whole. They have in common a brand, which they jointly represent, and also a business management system (the Say-Do-Prove system) - consisting not only of system-wide boundaries but also proprietary business management software which helps each take care of the back-end accounting and administrative processing. The effect is a balance between freedom and constraint, individualism and social process.
  • embodiment of meaning
  • But culture is a much more personal phenomenon
  • Culture is like climate- it does not exist in and of itself- it cannot exist in a vacuum, it must exist within a medium.
  • underlying culture
  • Incompatibility between the presenting culture and the underlying one provide a great source of tension
  • The truth of course is that when tension builds to a critical level it takes just a small perturbation to burst the bubble and the hidden culture reveals itself powered by the considerable pent-up energy.
    • Tiberius Brastaviceanu
       
      SENSORICA had this problem of different cultures, and it caused the 2 crisis in 2014. 
    • Tiberius Brastaviceanu
       
      SENSORICA had this problem of different cultures, and it caused the 2 crisis in 2014. 
  • Consider again the idea that for the health of an endangered species; the conditions in their habitat must be just right. In business, the work environment can be considered analogous to this idea of habitat.
  • A healthy environment is one that provides a blank canvas; it should be invisible in that it allows culture to be expressed without taint
  • The over-arching, high-level obligations are applied to the organization via contractual and legal terms.
  • But it is these obligations that the traditional corporate model separates out into functions and then parcels off to distinct groups. The effect is that a clear sight of these ‘higher’ obligations by the people at the front-end is obstructed. The overall sense of responsibility is not transmitted but gets lost in the distortions, discontinuities and contradictions inherent in the corporate systems of hierarchy and functionalization.
  • employees are individually rewarded for their contribution to each product. They are not “compensated” for the hours spent at work. If an employee wants to calculate their hourly rate, then they are free to do so however, they are only rewarded for the outcome not the duration of their endeavors.
  • Another simplification is the application of virtual accounts (Profit and Loss (P&L) account and Balance Sheet) on each person within the business.
  • The company systems simply provide a mechanism for cheaply measuring the success of each individual’s choices. For quality the measure is customer returns, for delivery it is an on-time-and-in-full metric and profit is expressed in terms of both pounds sterling and ROI (return on investment).
    • Tiberius Brastaviceanu
       
      They have a value accounting system. 
    • Tiberius Brastaviceanu
       
      They have a value accounting system. 
  • The innumerable direct links back to an external reality -like the fragile ties that bound giant Gulliver, seem much more effective at aligning the presenting culture and the underlying embodied culture, and in doing so work to remove the existing tension.
  • With a culture that responds directly to reality, the rules in the environment can be “bounding” rather than “binding”- limiting rather than instructive; this way individual behavior need not be directed at all. The goal is to free the individual to express himself fully through his work, bounded only by the limits of the law. With clever feedback (self-referencing feedback loops) integrated into the design, the individuals can themselves grow to collectively take charge of the system boundaries, culture and even the environment itself, always minded of the inherent risks they are balancing, leaving the law of the land as the sole artificial boundary.
  • the conventional company, which, instead of rewarding enterprise, trains compliance by suppressing individual initiative under layer upon layer of translation tools.
  • apply accountability to the individual not command-and-control.
  • without the divisive and overbearing management cabal the natural reaction of humans is to combine their efforts
  • a new member of staff at Matt Black Systems
  • recruited by another staff member (sponsor) and they will help you learn the basics of the business management system- they will help you get to know the ropes.
  • jobs are passed to new staff members, a royalty payment can be established on the work passed over.
  • Along with that job you will be given a cash float (risk capital), P&L Account, a Balance Sheet and computer software to help plan and record your activities. Your operation is monitored by your sponsor to see if you increase the margin or volume, and so establish a sustainable operation. Training and mentoring is provided to support the steep learning curve - but without removing the responsibility of producing a return on the sponsor’s risk capital.
  • You will, in the meantime be looking to establish some of your own work for which you will not have to pay a commission or royalty to your sponsor and this will provide you with more profitable operations such that eventually you might pass back to the sponsor the original operation, as it has become your lowest margin activity. It will then find its way to a new employee (along with the associated Balance Sheet risk capital) where the process is repeated by the sponsor.[4]
  • Remuneration for staff is calibrated in a way that reflects the balance of different forces around ‘pay’
  • there is an obligation upon the company to pay a minimum wage even if the profitability of the operation does not support this
  • there are therefore two aspects of the basic pay structure: one is “absolute” and reflects the entrepreneurial skill level of the employee according to a sophisticated grading scale
  • A further 20% of the original profit will be paid into his risk capital account, which will be his responsibility to deploy in any way he sees fit as part of his Balance Sheet. Of the three remaining 20% slices of the original profit, one is paid out as corporation tax, another as a dividend to the shareholders and the last retained as collective risk capital on the company’s balance sheet- a war chest so to speak.
  • Julian Wilson and Andrew Holm sell products / services to their staff (such as office space and software) they have an identical customer/supplier relationship with the other employees.
  • Naturally there are some people that can’t generate a profit. The sponsor’s risk capital will eventually be consumed through pay. After a process of rescue and recovery- where their shortcomings are identified and they are given the opportunity to put them right, they either improve or leave, albeit with a sizeable increase in their skills.
  • there is a gradual process of accustomisation; the void of the new employee is surrounded by others dealing with their particular activities, offering both role models and operations they may wish to relinquish. One step at a time the new employee acquires the skills to become completely self-managing, to increase their margins, to make investments, to find new business, to become a creator of their own success. Ultimately, they learn to be an entrepreneur.
  • responsible autonomy as an alternative vision to traditional hierarchy
  • Matt Black Systems it is not simply commitment that they targeted in their employees, rather they aim for the specific human qualities they sum up as magic- those of curiosity, imagination, creativity, cooperation, self-discipline and realization (bringing ideas to reality).
  • a new form of association of individuals working together under the umbrella of a company structure: a kind of collective autonomy
  • The business is called Matt Black Systems, based in Poole in dorset
  • Turning an organisation on its head- removing all management, establishing a P&L account and Balance Sheet on everyone in the organisation and having customers payment go first into the respective persons P&L account has revolutionised this company. 
  • This innovative company’s approach views business success as wholly reliant upon human agency, and its wellspring at the individual level.
  • problem (of unnecessarily high overheads placed on production) that arguably is behind the decline in western manufacturing
  • over-managed business
  • Autonomy Enables Productivity
  • organizational design brings to light the unconscious socio-philosophical paradigm of the society in which it exists, organizational development points to how change occurs.
  • a mechanistic approach to organization
  • scientific management employs rationalism and determinism in pursuit of efficiency, but leaves no place for self-determination for most people within the system.
  • Command and Control
  • today, a really “modern” view of an organization is more likely to be depicted in terms that are akin to an organism.
  • When it comes to getting work done, the simple question is: are people the problem or the solution?
  • the Taylorist approach may be more real in theory than in practice: its instrumentalist view of the workforce is cursed by unintended consequences. When workers have no space for their own creative expression, when they are treated like automata not unique individuals, when they become demotivated and surly, when they treat their work as a necessary evil; this is no recipe for a functional organization.
  • The natural, human reaction to this is unionization, defiance and even outright rebellion; to counter this, management grows larger and more rigid in pursuit of compliance, organizations become top heavy with staff who do not contribute directly to the process of value creation but wield power over those who do.
  • voluntary slavery of ‘wagery’
  • Even when disgruntled employees strike free and start their own businesses they seem unable to resist the hegemony of the conventional command-and-control approach
  • Making the transition involves adherence to a whole new sociology of work with all the challenging social and psychological implications that brings.
  • first principal that people in the business have the ability to provide the solution
  • In the “theory of constraints” the goal is to align front-line staff into a neat, compact line for maximum efficiency. Surely the most considered approach is to have front-line staff self-align in pursuit of their individual goals?
  • The removal of hierarchy and specialization is key to a massive improvement in both profitability and productivity. In summary: there are no managers in the company, or foremen, or sales staff, or finance departments; the company is not functionally compartmentalized and there is no hierarchy of command. In fact every member of staff operates as a virtual micro-business with their own Profit & Loss account and Balance Sheet, they manage their own work and see processes through from end to end
  • Formal interaction between colleagues takes place via “customer and supplier” relationships.
  • autonomy enables productivity
  • if one creates a space in which staff pursue their own goals and are not paid by the hour, they will focus on their activities not the clock; if they are not told what to do, they will need to develop their own initiative; if they are free to develop their own processes, they will discover through their own creative faculties how to work more productively- in pursuit of their goals
  • The human qualities which are of greatest potential value to the business are: curiosity, imagination, creativity, cooperation, self-discipline and realization (bringing ideas to reality)
  • These qualities are the very ones most likely to be withheld by an individual when the environment is ‘wrong’.
  • Any elements in the business environment that undermine the autonomy and purpose of the individual will see the above qualities withheld
  • High on the list of undermining elements come power-hierarchy and over-specialization
  • the responsibility of the individual is formalized, specified and restricted. An improved system is not one where responsibility is distributed perfectly but rather one where there is simply no opportunity for responsibility to be lost (via the divisions between the chunks). Systems must be reorganized so responsibility -the most essential of qualities -is protected and wholly preserved.
  • Matt Black Systems believe this can only be done by containing the whole responsibility within an individual, holding them both responsible and giving them ‘response-ability’
  • The experience of Matt Black Systems demonstrates that radical change is possible
  • productivity is up 300%, the profit margin is up 10%[3], customer perception has shifted from poor to outstanding, product returns are at less than 1%, “on time and in full” delivery is greater than 96%, pay has increased 100%.
  • staff develop broader and deeper skills and feel greater job security; they get direct feedback from their customers which all go to fuel self-confidence and self-esteem.
  • the staff manage themselves
  • “only variety can absorb variety”.
  • What is particular about their story is that behind it is a very consciously crafted design that surrounds the individualism of each person with hard boundaries of the customer, the law and the business. It is these boundaries rather than the instructive persona of ‘the boss’ that gives rise to the discipline in which individuals can develop. Autonomy is not the same as freedom, at least not in the loose sense of ‘do as you please’. An autonomous person is a person who has become self-governing, who has developed a capacity for self-regulation, quite a different notion from the absence of boundaries. Indeed, it is with establishing the right boundaries that the business philosophy is most concerned. The company provides the crucible in which the individual can develop self-expression but the container itself is bounded. Wilson calls this “designing the void”. This crucible is carefully constructed from an all-encompassing, interconnecting set of boundaries that provide an ultimate limit to behaviours (where they would fall foul of the law or take risks with catastrophic potential). It is an illusion to think, as a director of a company, that you are not engaged in a process of social conditioning; the basis of the culture is both your responsibility and the result of your influence. The trick is to know what needs to be defined and what needs to be left open. The traditional authoritarian, controlling characters that often dominate business are the antithesis of this in their drive to fill this void with process, persona and instruction. Alternatively, creating an environment that fosters enterprise, individuals discover how to be enterprising.
Tiberius Brastaviceanu

James Grier Miller, Living Systems (1978) - 0 views

  • reality as an integrated hierarchy of organizations of matter and energy
  • General living systems theory is concerned with a special subset of all systems, the living ones
  • a space is a set of elements which conform to certain postulate
  • ...266 more annotations...
  • s. Euclidean space
  • metric space
  • topological space
  • Physical space is the extension surrounding a point
  • My presentation of a general theory of living systems will employ two sorts of spaces in which they may exist, physical or geographical space and conceptual or abstracted spaces
  • Physical or geographical space
  • Euclidean space
  • distance
  • moving
  • maximum speed
  • objects moving in such space cannot pass through one another
  • friction
  • The characteristics and constraints of physical space affect the action of all concrete systems, living and nonliving.
  • information can flow worldwide almost instantly
  • Physical space is a common space
  • Most people learn that physical space exists, which is not true of many spaces
  • They can give the location of objects in it
  • Conceptual or abstracted spaces
  • Peck order
  • Social class space
  • Social distance
  • Political distance
  • life space
  • semantic space
  • Sociometric space
  • A space of time costs of various modes of transportation
  • space of frequency of trade relations among nations.
  • A space of frequency of intermarriage among ethnic groups.
  • These conceptual and abstracted spaces do not have the same characteristics and are not subject to the same constraints as physical space
  • Social and some biological scientists find conceptual or abstracted spaces useful because they recognize that physical space is not a major determinant of certain processes in the living systems they study
  • interpersonal relations
  • one cannot measure comparable processes at different levels of systems, to confirm or disconfirm cross-level hypotheses, unless one can measure different levels of systems or dimensions in the same spaces or in different spaces with known transformations among them
  • It must be possible, moreover, to make such measurements precisely enough to demonstrate whether or not there is a formal identity across levels
  • fundamental "fourth dimension" of the physical space-time continuum
  • is the particular instant at which a structure exists or a process occurs
  • or the measured or measurable period over which a structure endures or a process continues.
  • durations
  • speeds
  • rates
  • accelerations
  • irreversible unidirectionality of time
  • thermodynamics
  • negentropy
  • "time's arrow."
  • Matter and energy
  • Matter is anything which has mass (m) and occupies physical space.
  • Energy (E) is defined in physics as the ability to do work.
  • kinetic energy
  • potential energy
  • rest mass energy
  • Mass and energy are equivalent
  • Living systems need specific types of matter-energy in adequate amounts
  • Energy for the processes of living systems is derived from the breakdown of molecules
  • Any change of state of matter-energy or its movement over space, from one point to another, I shall call action.
  • It is one form of process.
  • information (H)
  • Transmission of Information
  • Meaning is the significance of information to a system which processes it: it constitutes a change in that system's processes elicited by the information, often resulting from associations made to it on previous experience with it
  • Information is a simpler concept: the degrees of freedom that exist in a given situation to choose among signals, symbols, messages, or patterns to be transmitted.
  • The set of all these possible categories (the alphabet) is called the ensemble or repertoire
  • .) The unit is the binary digit, or bit of information
  • . The amount of information is measured as the logarithm to the base 2 of the number of alternate patterns
  • Signals convey information to the receiving system only if they do not duplicate information already in the receiver. As Gabor says:
  • [The information of a message can] be defined as the 'minimum number of binary decisions which enable the receiver to construct the message, on the basis of the data already available to him.'
  • meaning cannot be precisely measured
  • Information is the negative of uncertainty.
  • information is the amount of formal patterning or complexity in any system.
  • The term marker was used by von Neumann to refer to those observable bundles, units, or changes of matter-energy whose patterning bears or conveys the informational symbols from the ensemble or repertoire.
  • If a marker can assume n different states of which only one is present at any given time, it can represent at most log2n bits of information. The marker may be static, as in a book or in a computer's memory
  • Communication of almost every sort requires that the marker move in space, from the transmitting system to the receiving system, and this movement follows the same physical laws as the movement of any other sort of matter-energy. The advance of communication technology over the years has been in the direction of decreasing the matter-energy costs of storing and transmitting the markers which bear information.
  • There are, therefore, important practical matter-energy constraints upon the information processing of all living systems exerted by the nature of the matter-energy which composes their markers.
  • organization is based upon the interrelations among parts.
  • If two parts are interrelated either quantitatively or qualitatively, knowledge of the state of one must yield some information about the state of the other. Information measures can demonstrate when such relationships exist
  • The disorder, disorganization, lack of patterning, or randomness of organization of a system is known as its entropy (S)
  • the statistical measure for the negative of entropy is the same as that for information
  • entropy becomes a measure of the probability
  • Increase of entropy was thus interpreted as the passage of a system from less probable to more probable states.
  • according to the second law, a system tends to increase in entropy over time, it must tend to decrease in negentropy or information.
  • therefore no principle of the conservation of information
  • The total information can be decreased in any system without increasing it elsewhere
  • but it cannot be increased without decreasing it elsewhere
  • . Making one or more copies of a given informational pattern does not increase information overall, though it may increase the information in the system which receives the copied information.
  • transforms information into negative entropy
  • smallest possible amount of energy used in observing one bit of information
  • calculations of the amount of information accumulated by living systems throughout growth.
  • the concept of Prigogine that in an open system (that is one in which both matter and energy can be exchanged with the environment) the rate of entropy production within the system, which is always positive, is minimized when the system is in a steady state.
  • in systems with internal feedbacks, internal entropy production is not always minimized when the system is in a stationary state. In other words, feedback couplings between the system parameters may cause marked changes in the rate of development of entropy. Thus it may be concluded that the "information flow" which is essential for this feedback markedly alters energy utilization and the rate of development of entropy, at least in some such special cases which involve feedback control. While the explanation of this is not clear, it suggests an important relationship between information and entropy
  • amount of energy actually required to transmit the information in the channel is a minute part of the total energy in the system, the "housekeeping energy" being by far the largest part of it
  • In recent years systems theorists have been fascinated by the new ways to study and measure information flows, but matter-energy flows are equally important. Systems theory is more than information theory, since it must also deal with energetics - such matters as
  • the flow of raw materials through societies
  • Only a minute fraction of the energy used by most living systems is employed for information processing
  • I have noted above that the movement of matter-energy over space, action, is one form of process. Another form of process is information processing or communication, which is the change of information from one state to another or its movement from one point to another over space
  • Communications, while being processed, are often shifted from one matter-energy state to another, from one sort of marker to another
  • transformations go on in living systems
  • One basic reason why communication is of fundamental importance is that informational patterns can be processed over space and the local matter-energy at the receiving point can be organized to conform to, or comply with, this information
  • the delivery of "flowers by telegraph."
  • Matter-energy and information always flow together
  • Information is always borne on a marker
  • . Conversely there is no regular movement in a system unless there is a difference in potential between two points, which is negative entropy or information
  • If the receiver responds primarily to the material or energic aspect, I shall call it, for brevity, a matter-energy transmission; if the response is primarily to the information, I shall call it an information transmission
  • Moreover, just as living systems must have specific forms of matter-energy, so they must have specific patterns of information
  • example
  • example
  • develop normally
  • have appropriate information inputs in infancy
  • pairs of antonyms
  • one member of which is associated with the concept of information (H)
  • the other member of which is associated with its negative, entropy (S)
  • System
  • A system is a set of interacting units with relationships among them
  • .The word "set" implies that the units have some common properties. These common properties are essential if the units are to interact or have relationships. The state of each unit is constrained by, conditioned by, or dependent on the state of other units. The units are coupled. Moreover, there is at least one measure of the sum of its units which is larger than the sum of that measure of its units.
  • Conceptual system
  • Units
  • terms
  • Relationships
  • a set of pairs of units, each pair being ordered in a similar way
  • expressed by words
  • or by logical or mathematical symbols
  • operations
  • The conceptual systems of science
  • observer
  • selects
  • particular sets to study
  • Variable
  • Each member of such a set becomes a variable of the observer's conceptual system
  • conceptual system may be loose or precise, simple or elaborate
  • Indicator
  • an instrument or technique used to measure fluctuations of variables in concrete systems
  • Function
  • a correspondence between two variables, x and y, such that for each value of x there is a definite value of y, and no two y's have the same x, and this correspondence is: determined by some rule
  • Any function is a simple conceptual system
  • Parameter
  • An independent variable through functions of which other functions may be expressed
  • The state of a conceptual system
  • the set of values on some scale, numerical or otherwise, which its variables have at a given instant
  • Formal identity
  • variables
  • varies comparably to a variable in another system
  • If these comparable variations are so similar that they can be expressed by the same function, a formal identity exists between the two systems
  • Relationships between conceptual and other sorts of systems
  • Science advances as the formal identity or isomorphism increases between a theoretical conceptual system and objective findings about concrete or abstracted systems
  • A conceptual system may be purely logical or mathematical, or its terms and relationships may be intended to have some sort of formal identity or isomorphism with units and relationships empirically determinable by some operation carried out by an observer
  • Concrete system
  • a nonrandom accumulation of matter-energy, in a region in physical space-time, which is organized into interacting interrelated subsystems or components.
  • Units
  • are also concrete systems
  • Relationships
  • spatial
  • temporal
  • spatiotemporal
  • causal
  • Both units and relationships in concrete systems are empirically determinable by some operation carried out by an observer
  • patterns of relationships or processes
  • The observer of a concrete system
  • distinguishes a concrete system from unorganized entities in its environment by the following criteria
  • physical proximity of its units
  • similarity of its units
  • common fate of its units
  • distinct or recognizable patterning of its units.
  • Their boundaries are discovered by empirical operations available to the general scientific community rather than set conceptually by a single observer
  • Variable of a concrete system
  • Any property of a unit or relationship within a system which can be recognized by an observer
  • which can potentially change over time, and whose change can potentially be measured by specific operations, is a variable of a concrete system
  • Examples
  • number of its subsystems or components, its size, its rate of movement in space, its rate of growth, the number of bits of information it can process per second, or the intensity of a sound to which it responds
  • A variable is intrasystemic
  • not to be confused with intersystemic variations which may be observed among individual systems, types, or levels.
  • The state of a concrete system
  • its structure
  • represented by the set of values on some scale which its variables have at that instant
  • Open system
  • Most concrete systems have boundaries which are at least partially permeable, permitting sizable magnitudes of at least certain sorts of matter-energy or information transmissions to pass them. Such a system is an open system. In open systems entropy may increase, remain in steady state, or decrease.
  • Closed system
  • impermeable boundaries through which no matter-energy or information transmissions of any sort can occur is a closed system
  • special case
  • No actual concrete system is completely closed
  • In closed systems, entropy generally increases, exceptions being when certain reversible processes are carried on which do not increase it. It can never decrease.
  • Nonliving system
  • the general case of concrete systems, of which living systems are a very special case. Nonliving systems need not have the same critical subsystems as living systems, though they often have some of them
  • Living system
  • a special subset of the set of all possible concrete systems
  • They all have the following characteristics:
  • open systems
  • inputs
  • throughputs
  • outputs
  • of various sorts of matter-energy and information.
  • maintain a steady state of negentropy even though entropic changes occur in them as they do everywhere else
  • by taking in inputs
  • higher in complexity or organization or negentropy
  • than their outputs
  • The difference permits them to restore their own energy and repair breakdowns in their own organized structure.
  • In living systems many substances are produced as well as broken down
  • To do this such systems must be open and have continual inputs of matter-energy and information
  • entropy will always increase in walled-off living systems
  • They have more than a certain minimum degree of complexity
  • They either contain genetic material composed of deoxyribonucleic acid (DNA)
  • or have a charter
  • blueprint
  • program
  • of their structure and process from the moment of their origin
  • may also include nonliving components.
  • They have a decider, the essential critical sub-system which controls the entire system, causing its subsystems and components to interact. Without such interaction under decider control there is no system.
  • other specific critical sub-systems or they have symbiotic or parasitic relationships with other living or nonliving systems
  • Their subsystems are integrated together to form actively self-regulating, developing, unitary systems with purposes and goals
  • They can exist only in a certain environment
  • change in their environment
  • produces stresses
  • Totipotential system
  • capable of carrying out all critical subsystem processes necessary for life is totipotential
  • Partipotential system
  • does not itself carry out all critical subsystem processes is partipotential
  • A partipotential system must interact with other systems that can carry out the processes which it does not, or it will not survive
  • parasitic
  • symbiotic
    • Tiberius Brastaviceanu
       
      The Exchange fime is a symbiotic system to SENSORICA
  • Fully functioning system
  • when it
  • Partially functioning system
  • it must do its own deciding, or it is not a system
  • Abstracted system
  • Units
  • relationships abstracted or selected by an observer in the light of his interests, theoretical viewpoint, or philosophical bias.
  • Some relationships may be empirically determinable by some operation carried out by the observer, but others are not, being only his concepts
  • Relationships
  • The relationships mentioned above are observed to inhere and interact in concrete, usually living, systems
  • these concrete systems are the relationships of abstracted systems.
  • The verbal usages of theoretical statements concerning abstracted systems are often the reverse of those concerning concrete systems
  • An abstracted system differs from an abstraction, which is a concept
  • representing a class of phenomena all of which are considered to have some similar "class characteristic." The members of such a class are not thought to interact or be interrelated, as are the relationships in an abstracted system
  • Abstracted systems are much more common in social science theory than in natural science.
  • are oriented toward relationships rather than toward the concrete systems
  • spatial arrangements are not usually emphasized
  • their physical limits often do not coincide spatially with the boundaries of any concrete system, although they may.
  • important difference between the physical and biological hierarchies, on the one hand, and social hierarchies, on the other
  • Most physical and biological hierarchies are described in spatial terms
  • we propose to identify social hierarchies not by observing who lives close to whom but by observing who interacts with whom
  • intensity of interaction
  • in most biological and physical systems relatively intense interaction implies relative spatial propinquity
  • To the extent that interactions are channeled through specialized communications and transportation systems, spatial propinquity becomes less determinative of structure.
    • Tiberius Brastaviceanu
       
      This is the case of SENSORICA, built on web-based communication and coordination tools. 
  • PARSONS
  • the unit of a partial social system is a role and not the individual.
  • culture
  • cumulative body of knowledge of the past, contained in memories and assumptions of people who express this knowledge in definite ways
  • The social system is the actual habitual network of communication between people.
  • RUESCH
  • A social system is a behavioral system
  • It is an organized set of behaviors of persons interacting with each other: a pattern of roles.
  • The roles are the units of a social system
    • Tiberius Brastaviceanu
       
      That is why we need a role system in SENSORICA
  • On the other hand, the society is an aggregate of social subsystems, and as a limiting case it is that social system which comprises all the roles of all the individuals who participate.
  • What Ruesch calls the social system is something concrete in space-time, observable and presumably measurable by techniques like those of natural science
  • To Parsons the system is abstracted from this, being the set of relationships which are the form of organization. To him the important units are classes of input-output relationships of subsystems rather than the subsystems themselves
  • system is a system of relationship in action, it is neither a physical organism nor an object of physical perception
  • evolution
  • differentiation
  • growth
  • from earlier and simpler forms and functions
  • capacities for specializations and gradients
  • [action] is not concerned with the internal structure of processes of the organism, but is concerned with the organism as a unit in a set of relationships and the other terms of that relationship, which he calls situation
  • Abstracted versus concrete systems
  • One fundamental distinction between abstracted and concrete systems is that the boundaries of abstracted systems may at times be conceptually established at regions which cut through the units and relationships in the physical space occupied by concrete systems, but the boundaries of these latter systems are always set at regions which include within them all the units and internal relationships of each system
  • A science of abstracted systems certainly is possible and under some conditions may be useful.
  • If the diverse fields of science are to be unified, it would be helpful if all disciplines were oriented either to concrete or to abstracted systems.
  • It is of paramount importance for scientists to distinguish clearly between them
Kurt Laitner

Club of Amsterdam blog: The impact of culture on education - 0 views

  • For example in some countries the objective of education is: to develop a critical mind, which in other cultures is viewed as absurd. In these countries students are supposed to try to learn as much as possible from the older generation and only when you are fully initiated you may communicate to have ideas of yourself.
  • For example in some countries the objective of education is: to develop a critical mind, which in other cultures is viewed as absurd. In these countries students are supposed to try to learn as much as possible from the older generation and only when you are fully initiated you may communicate to have ideas of yourself.
  • The combined scores for each country explain variations in behavior of people and organizations. The scores indicate the relative differences between cultures.
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  • n masculine cultures like USA, UK, Germany, Japan and Italy the dominant values are achievement and success. The dominant values in feminine cultures are consensus seeking, caring for others and quality of life. Sympathy is for the underdog. People try to avoid situations distinguishing clear winners and losers.  In masculine cultures performance and achievement are important. The sympathy is for the winners. Status is important to show success. Feminine cultures like the Scandinavian countries and the Netherlands have a people orientation. Small is beautiful and status is not so important.
  • In masculine cultures like USA, UK, Germany, Japan and Italy the dominant values are achievement and success. The dominant values in feminine cultures are consensus seeking, caring for others and quality of life. Sympathy is for the underdog. People try to avoid situations distinguishing clear winners and losers.  In masculine cultures performance and achievement are important. The sympathy is for the winners. Status is important to show success. Feminine cultures like the Scandinavian countries and the Netherlands have a people orientation. Small is beautiful and status is not so important.
  • In masculine cultures like USA, UK, Germany, Japan and Italy the dominant values are achievement and success. The dominant values in feminine cultures are consensus seeking, caring for others and quality of life. Sympathy is for the underdog. People try to avoid situations distinguishing clear winners and losers.  In masculine cultures performance and achievement are important. The sympathy is for the winners. Status is important to show success. Feminine cultures like the Scandinavian countries and the Netherlands have a people orientation. Small is beautiful and status is not so important.
  • For example in some countries the objective of education is: to develop a critical mind, which in other cultures is viewed as absurd. In these countries students are supposed to try to learn as much as possible from the older generation and only when you are fully initiated you may communicate to have ideas of yourself.
  • c. Masculinity vs. Femininity (MAS) In masculine cultures like USA, UK, Germany, Japan and Italy the dominant values are achievement and success. The dominant values in feminine cultures are consensus seeking, caring for others and quality of life. Sympathy is for the underdog. People try to avoid situations distinguishing clear winners and losers.  In masculine cultures performance and achievement are important. The sympathy is for the winners. Status is important to show success. Feminine cultures like the Scandinavian countries and the Netherlands have a people orientation. Small is beautiful and status is not so important.
  • He defines culture as “the collective programming of the mind that distinguishes the members of one group or category of people from others”.
  • Analyzing his data, Hofstede found five value clusters (or “dimensions”) being the most fundamental in understanding and explaining the differences in answers to the single questions in his questionnaires
  • The five dimensions of national culture identified by Hofstede are:  Power Distance Index (PDI)  Individualism vs. collectivism (IDV)  Masculinity vs. femininity (MAS)  Uncertainty Avoidance Index (UAI)  Long Term Orientation (LTO)
  • Power distance is the extent to which less powerful members of a society accept that power is distributed unequally. In high power-distance cultures everybody has his/her rightful place in society. Old age is respected, and status is important. In low power-distance cultures people try to look younger and powerful people try to look less powerful
  • In individualistic cultures, like almost all the rich Western countries, people look after themselves and their immediate family only; in collectivist cultures like Asia and Africa people belong to "in-groups" who look after them in exchange for loyalty
  • In masculine cultures like USA, UK, Germany, Japan and Italy the dominant values are achievement and success. The dominant values in feminine cultures are consensus seeking, caring for others and quality of life. Sympathy is for the underdog. People try to avoid situations distinguishing clear winners and losers.  In masculine cultures performance and achievement are important. The sympathy is for the winners. Status is important to show success. Feminine cultures like the Scandinavian countries and the Netherlands have a people orientation. Small is beautiful and status is not so important
  • Uncertainty avoidance (or uncertainty control) stands for the extent to which people feel threatened by uncertainty and ambiguity. In cultures with strong uncertainty avoidance, people have a strong emotional need for rules and formality to structure life
  • The last element of culture is the Long Term Orientation which is the extent to which a society exhibits a future-orientated perspective rather than a near term point of view.  Low scoring countries like the USA and West European countries are usually those under the influence of monotheistic religious systems, such as the Christian, Islamic or Jewish systems. People in these countries believe there is an absolute and indivisible truth. In high scoring countries such as Hong Kong, Taiwan, China, for example those practicing Buddhism, Shintoism or Hinduism,  people believe truth depends on time, context and situation
  •  
    has explanatory power over many of the fundamental disagreements I have seen play out in sensorica discussions - may be worthwhile to understand constituents based on this model
Kurt Laitner

Smart Contracts - 0 views

  • Whether enforced by a government, or otherwise, the contract is the basic building block of a free market economy.
  • A smart contract is a set of promises, specified in digital form, including protocols within which the parties perform on the other promises.
  • The basic idea of smart contracts is that many kinds of contractual clauses (such as liens, bonding, delineation of property rights, etc.) can be embedded in the hardware and software we deal with, in such a way as to make breach of contract expensive (if desired, sometimes prohibitively so) for the breacher.
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  • A broad statement of the key idea of smart contracts, then, is to say that contracts should be embedded in the world.
  • And where the vending machine, like electronic mail, implements an asynchronous protocol between the vending company and the customer, some smart contracts entail multiple synchronous steps between two or more parties
  • POS (Point of Sale)
  • EDI (Electronic Data Interchange
  • SWIFT
  • allocation of public network bandwidth via automated auctions
  • Smart contracts reference that property in a dynamic, proactively enforced form, and provide much better observation and verification where proactive measures must fall short.
  • The mechanisms of the world should be structured in such a way as to make the contracts (a) robust against naive vandalism, and (b) robust against sophisticated, incentive compatible (rational) breach.
  • A third category, (c) sophisticated vandalism (where the vandals can and are willing to sacrifice substantial resources), for example a military attack by third parties, is of a special and difficult kind that doesn't often arise in typical contracting, so that we can place it in a separate category and ignore it here.
  • The threat of physical force is an obvious way to embed a contract in the world -- have a judicial system decide what physical steps are to be taken out by an enforcement agency (including arrest, confiscation of property, etc.) in response to a breach of contract
  • It is what I call a reactive form of security.
  • The need to invoke reactive security can be minimized, but not eliminated, by making contractual arrangements verifiable
  • Observation of a contract in progress, in order to detect the first sign of breach and minimize losses, also is a reactive form of security
  • A proactive form of security is a physical mechanism that makes breach expensive
  • From common law, economic theory, and contractual conditions often found in practice, we can distill four basic objectives of contract design
  • observability
  • The disciplines of auditing and investigation roughly correspond with verification of contract performance
  • verifiability
  • The field of accounting is, roughly speaking, primarily concerned with making contracts an organization is involved in more observable
  • privity
  • This is a generalization of the common law principle of contract privity, which states that third parties, other than the designated arbitrators and intermediaries, should have no say in the enforcement of a contract
  • The field of security (especially, for smart contracts, computer and network security), roughly corresponds to the goal of privity.
  • enforceability
  • Reputation, built-in incentives, "self-enforcing" protocols, and verifiability can all play a strong part in meeting the fourth objective
  • Smart contracts often involve trusted third parties, exemplified by an intermediary, who is involved in the performance, and an arbitrator, who is invoked to resolve disputes arising out of performance (or lack thereof)
  • In smart contract design we want to get the most out of intermediaries and arbitrators, while minimizing exposure to them
  • Legal barriers are the most severe cost of doing business across many jurisdictions. Smart contracts can cut through this Gordian knot of jurisdictions
  • Where smart contracts can increase privity, they can decrease vulnerability to capricious jurisdictions
  • Secret sharing
  • The field of Electronic Data Interchange (EDI), in which elements of traditional business transactions (invoices, receipts, etc.) are exchanged electronically, sometimes including encryption and digital signature capabilities, can be viewed as a primitive forerunner to smart contracts
  • One important task of smart contracts, that has been largely overlooked by traditional EDI, is critical to "the meeting of the minds" that is at the heart of a contract: communicating the semantics of the protocols to the parties involved
  • There is ample opportunity in smart contracts for "smart fine print": actions taken by the software hidden from a party to the transaction.
  • Thus, via hidden action of the software, the customer is giving away information they might consider valuable or confidential, but the contract has been drafted, and transaction has been designed, in such a way as to hide those important parts of that transaction from the customer.
  • To properly communicate transaction semantics, we need good visual metaphors for the elements of the contract. These would hide the details of the protocol without surrendering control over the knowledge and execution of contract terms
  • Protocols based on mathematics, called cryptographic protocols, tre the basic building blocks that implement the improved tradeoffs between observability, verifiability, privity, and enforceability in smart contracts
  • secret key cryptography,
  • Public key cryptography
  • digital signatures
  • blind signature
  • Where smart contracts can increase observability or verifiability, they can decrease dependence on these obscure local legal codes and enforcement traditions
  • zero-knowledge interactive proof
  • digital mix
  • Keys are not necessarily tied to identities, and the task of doing such binding turns out to be more difficult than at first glance.
  • All public key operation are are done inside an unreadable hardware board on a machine with a very narrow serial-line connection (ie, it carries only a simple single-use protocol with well-verified security) to a dedicated firewall. Such a board is available, for example, from Kryptor, and I believe Viacrypt may also have a PGP-compatable board. This is economical for central sites, but may be less practical for normal users. Besides better security, it has the added advantage that hardware speeds up the public key computations.
  • If Mallet's capability is to physically sieze the machine, a weaker form of key protection will suffice. The trick is to hold the keys in volatile memory.
  • The data is still vulnerable to a "rubber hose attack" where the owner is coerced into revealing the hidden keys. Protection against rubber hose attacks might require some form of Shamir secret sharing which splits the keys between diverse phgsical sites.
  • How does Alice know she has Bob's key? Who, indeed, can be the parties to a smart contract? Can they be defined just by their keys? Do we need biometrics (such as autographs, typed-in passwords, retina scans, etc.)?
  • The public key cryptography software package "Pretty Good Privacy" (PGP) uses a model called "the web of trust". Alice chooses introducers whom she trusts to properly identify the map between other people and their public keys. PGP takes it from there, automatically validating any other keys that have been signed by Alice's designated introducers.
  • 1) Does the key actually belong to whom it appears to belong? In other words, has it been certified with a trusted signature?
  • 2) Does it belong to an introducers, someone you can trust to certify other keys?
  • 3) Does the key belong to someone you can trust to introduce other introducers? PGP confuses this with criterion (2). It is not clear that any single person has enough judgement to properly undertake task (3), nor has a reasonable institution been proposed that will do so. This is one of the unsolved problems in smart contracts.
  • PGP also can be given trust ratings and programmed to compute a weighted score of validity-- for example, two marginally trusted signatures might be considered as credible as one fully trusted signature
  • Notaries Public Two different acts are often called "notarization". The first is simply where one swears to the truth of some affidavit before a notary or some other officer entitled to take oaths. This does not require the notary to know who the affiant is. The second act is when someone "acknowledges" before a notary that he has executed a document as ``his own act and deed.'' This second act requires the notary to know the person making the acknowledgment.
  • "Identity" is hardly the only thing we might want map to a key. After all, physical keys we use for our house, car, etc. are not necessarily tied to our identity -- we can loan them to trusted friends and relatives, make copies of them, etc. Indeed, in cyberspace we might create "virtual personae" to reflect such multi-person relationships, or in contrast to reflect different parts of our personality that we do not want others to link. Here is a possible classification scheme for virtual personae, pedagogically presented:
  • A nym is an identifier that links only a small amount of related information about a person, usually that information deemed by the nym holder to be relevant to a particular organization or community
  • A nym may gain reputation within its community.
  • With Chaumian credentials, a nym can take advantage of the positive credentials of the holder's other nyms, as provably linked by the is-a-person credential
  • A true name is an identifier that links many different kinds of information about an person, such as a full birth name or social security number
  • As in magick, knowing a true name can confer tremendous power to one's enemies
  • A persona is any perstient pattern of behavior, along with consistently grouped information such as key(s), name(s), network address(es), writing style, and services provided
  • A reputable name is a nym or true name that has a good reputation, usually because it carries many positive credentials, has a good credit rating, or is otherwise highly regarded
  • Reputable names can be difficult to transfer between parties, because reputation assumes persistence of behavior, but such transfer can sometimes occur (for example, the sale of brand names between companies).
  • Blind signatures can be used to construct digital bearer instruments, objects identified by a unique key, and issued, cleared, and redeemed by a clearing agent.
  • The clearing agent prevents multiple clearing of particular objects, but can be prevented from linking particular objects one or both of the clearing nyms who transferred that object
  • These instruments come in an "online" variety, cleared during every transfer, and thus both verifiable and observable, and an "offline" variety, which can be transfered without being cleared, but is only verifiable when finally cleared, by revealing any the clearing nym of any intermediate holder who transfered the object multiple times (a breach of contract).
  • To implement a full transaction of payment for services, we need more than just the digital cash protocol; we need a protocol that guarantees that service will be rendered if payment is made, and vice versa
  • A credential is a claim made by one party about another. A positive credential is one the second party would prefer to reveal, such as a degree from a prestigious school, while that party would prefer not to reveal a negative credential such as a bad credit rating.
  • A Chaumian credential is a cryptographic protocol for proving one possesses claims made about onself by other nyms, without revealing linkages between those nyms. It's based around the is-a-person credential the true name credential, used to prove the linkage of otherwise unlinkable nyms, and to prevent the transfer of nyms between parties.
  • Another form of credential is bearer credential, a digital bearer instrument where the object is a credential. Here the second party in the claim refers to any bearer -- the claim is tied only to the reputable name of issuing organization, not to the nym or true name of the party holding the credential.
  • Smart Property We can extend the concept of smart contracts to property. Smart property might be created by embedding smart contracts in physical objects. These embedded protocols would automatically give control of the keys for operating the property to the party who rightfully owns that property, based on the terms of the contract. For example, a car might be rendered inoperable unless the proper challenge-response protocol is completed with its rightful owner, preventing theft. If a loan was taken out to buy that car, and the owner failed to make payments, the smart contract could automatically invoke a lien, which returns control of the car keys to the bank. This "smart lien" might be much cheaper and more effective than a repo man. Also needed is a protocol to provably remove the lien when the loan has been paid off, as well as hardship and operational exceptions. For example, it would be rude to revoke operation of the car while it's doing 75 down the freeway.
  • Smart property is software or physical devices with the desired characteristics of ownership embedded into them; for example devices that can be rendered of far less value to parties who lack possesion of a key, as demonstrated via a zero knowledge interactive proof
  • One method of implementing smart property is thru operation necessary data (OND): data necessary to the operation of smart property.
  • A smart lien is the sharing of a smart property between parties, usually two parties called the owner and the lienholder.
  • Many parties, especially new entrants, may lack this reputation capital, and will thus need to be able to share their property with the bank via secure liens
  • What about extending the concept of contract to cover agreement to a prearranged set of tort laws? These tort laws would be defined by contracts between private arbitration and enforcement agencies, while customers would have a choice of jurisdictions in this system of free-market "governments".
  • If these privately practiced law organizations (PPLs for short) bear ultimate responsibility for the criminal activities of their customers, or need to insure lack of defection or future payments on the part of customers, they may in turn ask for liens against their customers, either in with contractual terms allowing arrest of customers under certain conditions
  • Other important areas of liability include consumer liability and property damage (including pollution). There need to mechanisms so that, for example, pollution damage to others' persons or property can be assessed, and liens should exist so that the polluter can be properly charged and the victims paid. Where pollution is quantifiable, as with SO2 emissions, markets can be set up to trade emission rights. The PPLs would have liens in place to monitor their customer's emissions and assess fees where emission rights have been exceeded.
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