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Gareth Jones

Looking in the Wrong Places | Edge.org - 5 views

www.edge.org/...er-looking-in-the-wrong-places

NaturalScience senseperception paradigm

shared by Gareth Jones on 19 May 18 - No Cached
  • We should be very careful in thinking about whether we’re working on the right problems. If we don’t, that ties into the problem that we don’t have experimental evidence that could move us forward. We're trying to develop theories that we use to find out which are good experiments to make, and these are the experiments that we build.   We build particle detectors and try to find dark matter; we build larger colliders in the hope of producing new particles; we shoot satellites into orbit and try to look back into the early universe, and we do that because we hope there’s something new to find there. We think there is because we have some idea from the theories that we’ve been working on that this would be something good to probe. If we are working with the wrong theories, we are making the wrong extrapolations, we have the wrong expectations, we make the wrong experiments, and then we don’t get any new data. We have no guidance to develop these theories. So, it’s a chicken and egg problem. We have to break the cycle. I don’t have a miracle cure to these problems. These are hard problems. It’s not clear what a good theory is to develop. I’m not any wiser than all the other 20,000 people in the field.
  • I’m still asking myself the same question that I asked myself ten years ago: "What is going on in my community?" I work in the foundations of physics, and I see a lot of strange things happening there. When I look at the papers that are being published, many of them seem to be produced simply because papers have to be produced. They don’t move us forward in any significant way. I get the impression that people are working on them not so much because it’s what they’re interested in but because they have to produce outcomes in a short amount of time. They sit on short-term positions and have short-term contracts, and papers must be produced.
  • The field that I mostly work in is the foundations of physics, which is, roughly speaking, composed of cosmology, the foundations of quantum mechanics, high-energy particle physics, and quantum gravity. It’s a peculiar field because there hasn’t been new data for almost four decades, since we established the Standard Model of particle physics. There has been, of course, the Higgs particle that was discovered at the LHC in 2012, and there have been some additions to the Standard Model, but there has not been a great new paradigm change, as Kuhn would have put it. We’re still using the same techniques, and we’re still working with the same theories as we did in the 1970s.
  • ...10 more annotations...
  • That makes this field of science rather peculiar and probably explains why there hasn’t been much progress. But it’s not like we don’t have any questions that need to be answered. There are a lot of questions that have been around for decades. For example, what is dark energy? What is dark matter? What are the masses of the Standard Model particles? And what’s up with the foundation of quantum mechanics? Is a theory that's fundamentally not deterministic, where we cannot predict outcomes, the last word that we have, or is there something more to it? Is there maybe another underlying structure to reality?
  • but we haven't reached the fundamental level. Maybe we will never reach it. Certainly, the theories that we have right now are not all there is. The question is, of course, if we don’t have any guidance by experiment, how do we make progress? And are we doing the right thing?
  • We’ve reached this point where we have to carefully rethink if the criteria that we’re using to select our theories are promising at all. If one looks at the history of this field in the foundations of physics, progress has usually been made by looking at questions that, at least in hindsight, were well posed, where there was an actual mathematical contradiction. For example, special relativity is incompatible with Newtonian gravity. If you try to resolve this incompatibility, you get general relativity.
  • There are various similar examples where such breakthroughs have happened because there was a real problem. There was an inconsistency and people had to resolve it. It had nothing to do with beauty. Maybe beauty was, in some cases, the personal motivation of the people to work on it. There’s certainly some truth to this, but I don’t think it’s good to turn this story around and say that if we only pay attention to this motivation that comes from ideals of beauty it will lead to progress.
  • If we are working with the wrong theories, we are making the wrong extrapolations, we have the wrong expectations, we make the wrong experiments, and then we don’t get any new data. We have no guidance to develop these theories. So, it’s a chicken and egg problem. We have to break the cycle. I don’t have a miracle cure to these problems. These are hard problems. It’s not clear what a good theory is to develop. I’m not any wiser than all the other 20,000 people in the field.
  • The way that research is funded in foundations of physics and in many other fields just puts a lot of things at a disadvantage that are not pursued anymore. Typically, everything that takes longer than three years to complete, no one will start it because they can’t afford it. They can literally not afford it.
  • Who makes the decisions about the funding? Superficially, people say that it's a funding agency, so it’s the university who get to hire people. But that puts the blame on the wrong party. In the end it’s the community itself who makes the decisions. What do the funding agencies do if they get a proposal? They send it to reviewers. And who are the reviewers? They're people from the same community. If you look at how hiring decisions are being made, there’s some committee and they are people from the same community. They have some advisory boards or something, which contains people from the same community.
  • Even if that wasn’t so, what the people in these committees would be doing is looking at easy measures for scientific success. Presently, the most popular of these measures are the number of publications and the number of citations. And maybe also whether the person has published in high-impact journals. So, these are the typical measures that are presently being used. But what do they measure? They primarily measure popularity. They indicate whether somebody’s research is well received by a lot of people in the same community. And that’s why once a research area grows beyond a certain critical mass, you have sufficiently many people who tell each other that what they’re doing is the good thing to do. They review each other’s papers and say that that’s great and it's what we should continue to do. It’s a problem in all communities that grow beyond a certain size.
  • I later came to the United States and then Canada, and that gave me the opportunity to learn a lot about quantum gravity. I also figured out that much of what goes on in quantum gravity is very detached from reality. It’s pretty much only mathematics. Yes, the mathematics is there, but I still don’t know if it’s the mathematics that describes reality.
  • That’s the very reason why we don’t normally think of gravity as a weak force. It’s the only force that is left over on long distances, and the reason for this is that it adds up. It gets stronger the more mass you pile up. More precisely, we should say that the reason we find it so hard to measure quantum gravitational effects is that we either have a particle that has very pronounced quantum properties, like, say, a single electron or something like that, but then it’s so light that we cannot measure the gravitational field. Or we have some object that is so heavy that we can measure the gravitational field, but then it doesn’t have quantum properties. Okay, so that’s the actual problem.
Carol Ansel

The Daring Librarian: Wikipedia is not wicked! - The Answer Sheet - The Washington Post - 70 views

www.washingtonpost.com/...gIQAYWSF8J_blog.html

wikipedia washintonpost daringlibrarian encyclopedia research

shared by Carol Ansel on 08 Sep 11 - No Cached
  • Teaching Wikipedia in 5 Easy Steps: *Use it as background information *Use it for technology terms *Use it for current pop cultural literacy *Use it for the Keywords *Use it for the REFERENCES at the bottom of the page!
  • 4 ways to use Wikipedia (hint: never cite it) Teachers: Please stop prohibiting the use of Wikipedia 20 Little Known Ways to Use Wikipedia Study: Wikipedia as accurate as Encyclopedia Britannica Schiff, Stacy. “Know it all: Can Wikipedia conquer expertise?” The New Yorker, February 26, 2006 And: Yes students, there’s a world beyond Wikipedia **Several years ago, Nature magazine did a comparison of material available on Wikipedia and Brittanica and concluded that Brittanica was somewhat, but not overwhelmingly, more accurate than Wikipedia. Brittanica lodged a complaint, and here, you can see what it complained about as well as Nature’s response. Nature compared articles from both organizations on various topics and sent them to experts to review. Per article, the averages were: 2.92 mistakes per article for Britannica and 3.86 for Wikipedia. -0- Follow The Answer Sheet every day by bookmarking http://www.washingtonpost.com/blogs/answer-sheet. And for admissions advice, college news and links to campus papers, please check out our Higher Education page. Bookmark it! var entrycat = ' ' By Valerie Strauss  |  05:00 AM ET, 09/07/2011 .connect_widget .connect_widget_text .connect_widget_connected_text a {display:block;} #center {overflow:visible;} /*.override-width iframe {width:274px !important;}*/ Tumblr Reddit Stumbleupon Digg Delicious LinkedIn http://platform.twitter.com/widgets/tweet_button.html#_=1315504289567&count=horizontal&counturl=http%3A%2F%2Fwww.washingtonpost.com%2Fblogs%2Fanswer-sheet%2Fpost%2F
  • Carol Ansel on 08 Sep 11
     
    Excellent perspective on "The 'W' Word" - use it wisely for what it is - high school and college kids shouldn't be citing any general knowledge encyclopedias for serious research - but that doesn't mean there aren't some excellent uses for it.
Laura Doto

Final Report: Friendship | DIGITAL YOUTH RESEARCH - 1 views

digitalyouth.ischool.berkeley.edu/book-friendship

Aristotle Friendship teens adolescents online network

shared by Laura Doto on 23 Jun 09 - Cached
  • Social relations—not simply physical space—structure the social worlds of youth.
    • Laura Doto
      Laura Doto on 23 Jun 09
       
      A critical conclusion to be realized that can inform our assumptions as educators.
  • When teens are involved in friendship-driven practices, online and offline are not separate worlds—they are simply different settings in which to gather with friends and peers
  • these dynamics reinforce existing friendship patterns as well as constitute new kinds of social arrangements.
  • ...43 more annotations...
  • Homophily describes the likelihood that people connect to others who share their interests and identity.
  • One survey of Israeli teens suggests that those who develop friendships online tend toward less homogenous connections than teens who do not build such connections
  • Teens frequently use social media as additional channels of communication to get to know classmates and turn acquaintances into friendships.
  • Some teens—especially marginalized and ostracized ones—often relish the opportunity to find connections beyond their schools. Teens who are driven by specific interests that may not be supported by their schools, such as those described in the Creative Production and Gaming chapters, often build relationships with others online through shared practice.
  • there are plenty of teens who relish the opportunity to make new connections through social media, this practice is heavily stigmatized
  • the public myths about online “predators” do not reflect the actual realities of sexual solicitation and risky online behavior (Wolak et al. 2008). Not only do unfounded fears limit teenagers unnecessarily, they also obscure preventable problematic behavior
  • As she described her typical session on Photobucket, it became clear that a shared understanding of friendship and romance was being constructed by her and other Photobucket users:
  • The fact that they draw from all of these sources suggests that youth’s friendship maintenance is in tune with a discourse of love and friendship that is being widely displayed and (re)circulated.
  • “It’s like have you noticed that you may have someone in your Top 8 but you’re not in theirs and you kinda think to yourself that you’re not as important to that person as they are to you . . . and oh, to be in the coveted number-one spot!”
  • Taking someone off your Top 8 is your new passive-aggressive power play when someone pisses you off.
  • Top Friends are persistent, publicly displayed, and easily alterable. This makes it difficult for teens to avoid the issue or make excuses such as “I forgot.” When pressured to include someone, teens often oblige or attempt to ward off this interaction by listing those who list them
  • Other teens avoid this struggle by listing only bands or family members. While teens may get jealous if other peers are listed, family members are exempt from the comparative urge.
  • to avoid social drama with her friends:
  • The Top Friends feature is a good example of how structural aspects of software can force articulations that do not map well to how offline social behavior works.
  • teens have developed a variety of social norms to govern what is and is not appropriate
  • The problem with explicit ranking, however, is that it creates or accentuates hierarchies where they did not exist offline, or were deliberately and strategically ambiguous, thus forcing a new set of social-status negotiations. The give-and-take over these forms of social ranking is an example of how social norms are being negotiated in tandem with the adoption of new technologies, and how peers give ongoing feedback to one another as part of these struggles to develop new cultural standards.
  • While teen dramas are only one component of friendship, they are often made extremely visible by social media. The persistent and networked qualities of social media alter the ways that these dramas play out in teen life. For this reason, it is important to pay special attention to the role that social media play in the negotiation of teen status.
  • primarily a continuation of broader dramas.
  • social media amplify dramas because they extend social worlds beyond the school.
  • Gossip and rumors have played a role in teen struggles for status and attention since well before social media entered the scene
  • social media certainly alter the efficiency and potential scale of interactions. Because of this, there is greater potential for gossip to spread much further and at a faster pace, making social media a culprit in teen drama. While teen gossip predates the Internet, some teens blame the technologies for their roles in making gossip easier and more viral
  • That’s what happened with me and my friends. We got into a lot of drama with it and I was like, anyone can write anything. It can be fact, fiction. Most people, what they read they believe. Even if it’s not true (C.J. Pascoe, Living Digital).
  • finds the News Feed useful “because it helps you to see who’s keeping track of who and who’s talking to who.” She enjoys knowing when two people break up so that she knows why someone is upset or when she should reach out to offer support. Knowing this information also prevents awkward conversations that might reference the new ex. While she loves the ability to keep up with the lives of her peers, she also realizes that this means that “everybody knows your business.”
  • Some teens find the News Feed annoying or irrelevant. Gadil, an Indian 16-year-old from Los Angeles, thinks that it is impersonal while others think it is downright creepy. For Tara, a Vietnamese 16-year-old from Michigan, the News Feed takes what was public and makes it more public: “Facebook’s already public. I think it makes it way too like stalker-ish.” Her 18-year-old sister, Lila, concurs and points out that it gets “rumors going faster.” Kat, a white 14-year-old from Salem, Massachusetts, uses Facebook’s privacy settings to hide stories from the News Feed for the sake of appearances.
  • While gossip is fairly universal among teens, the rumors that are spread can be quite hurtful. Some of this escalates to the level of bullying. We are unable to assess whether or not bullying is on the rise because of social media. Other scholars have found that most teens do not experience Internet-driven harassment (Wolak, Mitchell, and Finkelhor 2007). Those who do may not fit the traditional profile of those who experience school-based bullying (Ybarra, Diener-West, and Leaf 2007), but harassment, both mediated and unmediated, is linked to a myriad of psychosocial issues that includes substance use and school problems (Hinduja and Patchin 2008; Ybarra et al. 2007).
  • Measuring “cyberbullying” or Internet harassment is difficult, in part because both scholars and teens struggle to define it. The teens we interviewed spoke regularly of “drama” or “gossip” or “rumors,” but few used the language of “bullying” or “harassment” unless we introduced these terms. When Sasha, a white 16-year-old from Michigan, was asked specifically about whether or not rumors were bullying, she said: I don’t know, people at school, they don’t realize when they are bullying a lot of the time nowadays because it’s not so much physical anymore. It’s more like you think you’re joking around with someone in school but it’s really hurting them. Like you think it’s a funny inside joke between you two, but it’s really hurtful to them, and you can’t realize it anymore. Sasha, like many of the teens we interviewed, saw rumors as hurtful, but she was not sure if they were bullying. Some teens saw bullying as being about physical harm; others saw it as premeditated, intentionally malicious, and sustained in nature. While all acknowledged that it could take place online, the teens we interviewed thought that most bullying took place offline, even if they talked about how drama was happening online.
  • it did not matter whether it was online or offline; the result was still the same. In handling this, she did not get offline, but she did switch schools and friend groups.
  • Technology provides more channels through which youth can potentially bully one another. That said, most teens we interviewed who discussed being bullied did not focus on the use of technology and did not believe that technology is a significant factor in bullying.
  • They did, though, see rumors, drama, and gossip as pervasive. The distinction may be more connected with language and conception than with practice. Bianca, a white 16-year-old from Michigan, sees drama as being fueled by her peers’ desire to get attention and have something to talk about. She thinks the reason that people create drama is boredom. While drama can be hurtful, many teens see it simply as a part of everyday social life.
  • Although some drama may start out of boredom or entertainment, it is situated in a context where negotiating social relations and school hierarchies is part of everyday life. Teens are dealing daily with sociability and related tensions.
  • Tara thinks that it emerges because some teens do not know how to best negotiate their feelings and the feelings of others.
  • Teens can use the ability to publicly validate one another on social network sites to reaffirm a friendship.
  • So, while drama is common, teens actually spend much more time and effort trying to preserve harmony, reassure friends, and reaffirm relationships. This spirit of reciprocity is common across a wide range of peer-based learning environments we have observed.
  • From this perspective, commenting is not as much about being nice as it is about relying on reciprocity for self-gain
  • That makes them feel like they’re popular, that they’re getting comments all the time by different people, even people that they don’t know. So it makes them feel popular in a way (Rural and Urban Youth).
  • Gossip, drama, bullying, and posing are unavoidable side effects of teens’ everyday negotiations over friendship and peer status. What takes place in this realm resembles much of what took place even before the Internet, but certain features of social media alter the dynamics around these processes. The public, persistent, searchable, and spreadable nature of mediated information affects the way rumors flow and how dramas play out. The explicitness surrounding the display of relationships and online communication can heighten the social stakes and intensity of status negotiation. The scale of this varies, but those who experience mediated harassment are certainly scarred by the process. Further, the ethic of reciprocity embedded in networked publics supports the development of friendships and shared norms, but it also plays into pressures toward conformity and participation in local, school-based peer networks. While there is a dark side to what takes place, teens still relish the friendship opportunities that social media provide.
  • While social warfare and drama do exist, the value of social media rests in their ability to strengthen connections. Teens leverage social media for a variety of practices that are familiar elements of teen life: gossiping, flirting, joking around, and hanging out. Although the underlying practices are quite familiar, the networked, public nature of online communication does inflect these practices in new ways.
  • Adults’ efforts to regulate youth access to MySpace are the latest example of how adults are working to hold on to authority over teen socialization in the face of a gradual erosion of parental influence during the teen years.
  • learning how to manage the unique affordances of networked sociality can help teens navigate future collegiate and professional spheres where mediated interactions are assumed.
  • articulating those friendships online means that they become subject to public scrutiny in new ways;
  • This makes lessons about social life (both the failures and successes) more consequential and persistent
  • make these dynamics visible in a more persistent and accessible public arena.
  • co-constructing new sets of social norms together with their peers and the efforts of technology developers. The dynamics of social reciprocity and negotiations over popularity and status are all being supported by participation in publics of the networked variety as formative influences in teen life. While we see no indication that social media are changing the fundamental nature of these friendship practices, we do see differences in the intensity of engagement among peers, and conversely, in the relative alienation of parents and teachers from these social worlds.
  • Laura Doto on 23 Jun 09
     
    MacArthur Foundation Study - Friendship chapter
Martin Burrett

Maths Charts - 104 views

www.amathsdictionaryforkids.com/mathsCharts.html

maths charts number addition subtraction multiplication division fractions decimals percentages ratio algebra data statistics probability geometry measurement time money

shared by Martin Burrett on 02 Apr 12 - No Cached
  • Martin Burrett on 02 Apr 12
     
    A great new resource from the creator of 'A Maths Dictionary for Kids'. Download and print beautifully designed and wonderfully useful maths posters on a good range of topics. Your classroom walls will never be the same again. http://ictmagic.wikispaces.com/Maths
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