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but News Feed only displays a subset of the stories generated by your friends — if it displayed everything, there’s a good chance you’d be overwhelmed. Developers are always trying to make sure their sites and apps are publishing stories that make the cut, which has led to the concept of “News Feed Optimization”, and their success is dictated by EdgeRank.

At a high level, the EdgeRank formula is fairly straightforward. But first, some definitions: every item that shows up in your News Feed is considered an Object. If you have an Object in the News Feed (say, a status update), whenever another user interacts with that Object they’re creating what Facebook calls an Edge, which includes actions like tags and comments. Each Edge has three components important to Facebook’s algorithm: First, there’s an affinity score between the viewing user and the item’s creator — if you send your friend a lot of Facebook messages and check their profile often, then you’ll have a higher affinity score for that user than you would, say, an old acquaintance you haven’t spoken to in years. Second, there’s a weight given to each type of Edge. A comment probably has more importance than a Like, for example. And finally there’s the most obvious factor — time. The older an Edge is, the less important it becomes.

Multiply these factors for each Edge then add the Edge scores up and you have an Object’s EdgeRank. And the higher that is, the more likely your Object is to appear in the user’s feed. It’s worth pointing out that the act of creating an Object is also considered an Edge, which is what allows Objects to show up in your friends’ feeds before anyone has interacted with them.

This post is about how one should deal with a denialist of Delingpole's ilk.

I saw someone I follow on Twitter retweet an update from another Twitter user called @AGW_IS_A_HOAX, which was this: "NZ #Climate Scientists Admit Faking Temperatures http://bit.ly/fHbdPI RT @admrich #AGW #Climategate #Cop16 #ClimateChange #GlobalWarming".

So I click on it. And this is how you deal with a denialist claim. You actually look into it. Here is the text of that article reproduced in full: New Zealand Climate Scientists Admit To Faking Temperatures: The Actual Temps Show Little Warming Over Last 50 YearsRead here and here. Climate "scientists" across the world have been blatantly fabricating temperatures in hopes of convincing the public and politicians that modern global warming is unprecedented and accelerating. The scientists doing the fabrication are usually employed by the government agencies or universities, which thrive and exist on taxpayer research dollars dedicated to global warming research. A classic example of this is the New Zealand climate agency, which is now admitting their scientists produced bogus "warming" temperatures for New Zealand. "NIWA makes the huge admission that New Zealand has experienced hardly any warming during the last half-century. For all their talk about warming, for all their rushed invention of the “Eleven-Station Series” to prove warming, this new series shows that no warming has occurred here since about 1960. Almost all the warming took place from 1940-60, when the IPCC says that the effect of CO2 concentrations was trivial. Indeed, global temperatures were falling during that period.....Almost all of the 34 adjustments made by Dr Jim Salinger to the 7SS have been abandoned, along with his version of the comparative station methodology."A collection of temperature-fabrication charts.

The website, churnalism.com, created by charity the Media Standards Trust, allows readers to paste press releases into a "churn engine". It then compares the text with a constantly updated database of more than 3m articles. The results, which give articles a "churn rating", show the percentage of any given article that has been reproduced from publicity material.The Guardian was given exclusive access to churnalism.com prior to launch. It revealed how all media organisations are at times simply republishing, verbatim, material sent to them by marketing companies and campaign groups.

The creation of churnalism.com is likely to unnerve overworked journalists and the press officers who feed them. "People don't realise how much churn they're being fed every day," said Martin Moore, director of the trust, which seeks to improve standards in news. "Hopefully this will be an eye-opener."

It’s too soon to say that Twitter and Facebook destroy the mental foundations of morality, but not too soon to ask what they’re doing.

In the paper, published Monday in the Proceedings of the National Academy of Sciences, 13 people were shown documentary-style multimedia narratives designed to arouse empathy. Researchers recorded their brain activity and found that empathy is as deeply rooted in the human psyche as fear and anger.

They also noticed that empathic brain systems took an average of six to eight seconds to start up. The researchers didn’t connect this to media consumption habits, but the study’s press release fueled speculation that the Facebook generation could turn into sociopaths.

Since then many studies reinforced this theory, showing that Catholicism, and indeed religion in general, seems to protect against suicide. Unfortunately, almost all these studies have been flawed - most often because they looked at average suicide rates and average religious beliefs across particular societies. They didn't look at the individual characteristics of those people who commit suicide.

Three new studies have addressed this problem. Each of them them takes advantage of new data to explore in some detail the link between religion and reduced suicide.

Matthias Egger, at the University of Bern in Switzerland, has cleverly linked census data to death records - not at all as straightforward as you might imagine. What that gives, for the first time, is a large database with reliable records of individual's religious affiliation in the last few years before they took their life.

Genetic evolution in humans occurs in an environment shaped by culture - and culture, in turn is shaped by genetics.

If religion is a virus, then perhaps the spread of religion can be understood through the lens of evolutionary theory. Perhaps cultural evolution can be modelled using the same mathematical tools applied to genetic evolution.

Michael Doebli and Iaroslav Ispolatov at the University of  British Columbia

Food choices are often like that: difficult to articulate yet strongly held. And lately, debates over food choices have flared with particular vehemence.

Gary Steiner, a philosopher at Bucknell University, argued on the Op-Ed page of The New York Times that people should strive to be “strict ethical vegans” like himself, avoiding all products derived from animals, including wool and silk. Killing animals for human food and finery is nothing less than “outright murder,”

we might consider that plants no more aspire to being stir-fried in a wok than a hog aspires to being peppercorn-studded in my Christmas clay pot.

HB Gary people are talking about creating "personas", what we would call sockpuppets. This is not new. PR firms have been using fake "people" to promote products and other things for a while now, both online and even in bars and coffee houses.

But for a defense contractor with ties to the federal government, Hunton & Williams, DOD, NSA, and the CIA -  whose enemies are labor unions, progressive organizations,  journalists, and progressive bloggers,  a persona apparently goes far beyond creating a mere sockpuppet. According to an embedded MS Word document found in one of the HB Gary emails, it involves creating an army of sockpuppets, with sophisticated "persona management" software that allows a small team of only a few people to appear to be many, while keeping the personas from accidentally cross-contaminating each other. Then, to top it off, the team can actually automate some functions so one persona can appear to be an entire Brooks Brothers riot online.

Persona management entails not just the deconfliction of persona artifacts such as names, email addresses, landing pages, and associated content.  It also requires providing the human actors technology that takes the decision process out of the loop when using a specific persona.  For this purpose we custom developed either virtual machines or thumb drives for each persona.  This allowed the human actor to open a virtual machine or thumb drive with an associated persona and have all the appropriate email accounts, associations, web pages, social media accounts, etc. pre-established and configured with visual cues to remind the actor which persona he/she is using so as not to accidentally cross-contaminate personas during use.

a New York Times article covered the stiff competition for entrance to public and private kindergartens in Manhattan for especially smart kids.  Whereas at one time teachers recommended students to these programs, today entrance to both public and private schools for gifted children is dependent entirely on test scores.

It’s unfair that entrance into kindergarten level programs is being gamed by people with resources, disadvantaging the most disadvantaged kids from the get go.  I think it’s egregious.  Many people will agree that this isn’t fair.

But the more insidious value, the one that almost no one would identify as problematic, is the idea that all parents should do everything they can to give their child advantages.  Even Ms. Stewart thinks so.  “They want to help their kids,” she said. “If I could buy it, I would, too.” Somehow, in the attachment to the idea that we should all help our kids get every advantage, the fact that advantaging your child disadvantages other people’s children gets lost.  If it advantages your child, it must be advantaging him over someone else; otherwise it’s not an advantage, you see?

Lindsay Taliaferro, a doctoral candidate at the University of Florida, surveyed over 400 of her fellow students. The response rate was high - around 90%. The good news is that, for the most part, they were not suicidal! On average, they scored 11 on a 70-point scale of suicidal thinking.

as expected, those who reported high levels of religious well being (e.g. that they find strength or support from God) or involvement in religious activities had fewer suicidal thoughts.

She also asked how hopeless or depressed the students felt, and how much social support they felt they got. When she took this into account, the effects of religion disappeared. What this suggests is that religious well-being and involvement have whatever effects they have by reducing hopelessness and depression, and by increasing social support.

have you noticed how the capacity of the media to explain in lay terms such matters as quantum physics, or cosmology, is contracting faster than the universe is expanding? The more mind warping the discoveries the less opportunity there is to fit them into 30 seconds in a news cast, or 300 words in print.

There has been a long running conspiracy of convenience between science reporters and the science being reported to leave out inconvenient time and space consuming explanations, and go for the punch line that best suits the use of the media to lobby for more project funding.

Almost every space story I have written over 50 years has been about projects claiming to ‘discover the origins of the solar system/life on earth/life on Mars/discover the origins of the universe, or recover parts of things like comets because they are as old as the sun, except that we have discovered they aren’t ancient at all.’ None of them were ever designed to achieved those goals. They were brilliant projects, brilliantly misrepresented by the scientists and the reporters because an accurate story would have been incomprehensible to 99.9% of readers or viewers.

Sarah Finocchario-Kessler, at the University of Kansas, used data from one such drug trial to see what the effect of religious beliefs (and other psychological factors) was on medication taking.

One recent study looked at whether people with HIV took their medicine as they were supposed to. Most trials of new drugs monitor this, and it can be done very easily simply using special bottles that record each time they're opened.

people who used a passive religious deferral coping style (e.g. "I don’t try much of anything; simply expect God to take control") were less likely to take their medicine as often as they were supposed to.  On the other hand,  collaborative religious coping "I work together with God as partners" or self-directing religious coping (e.g., "I make decisions about what to do without God’s help" had no effect on whether people took their medicines.

We were starting to feel very bad for him and his family, when we noticed the TV and other high-tech gadgets. Why had he bought all these things if he felt the family did not have enough to eat? He laughed, and said, "Oh, but television is more important than food!"

For many in the West, poverty is almost synonymous with hunger. Indeed, the announcement by the United Nations Food and Agriculture Organization in 2009 that more than 1 billion people are suffering from hunger grabbed headlines in a way that any number of World Bank estimates of how many poor people live on less than a dollar a day never did. COMMENTS (7) SHARE: Twitter   Reddit   Buzz   More... But is it really true? Are there really more than a billion people going to bed hungry each night?

unfortunately, this is not always the world as the experts view it. All too many of them still promote sweeping, ideological solutions to problems that defy one-size-fits-all answers, arguing over foreign aid, for example, while the facts on the ground bear little resemblance to the fierce policy battles they wage.

Muller calls his latest obsession the Berkeley Earth project. The aim is so simple that the complexity and magnitude of the undertaking is easy to miss. Starting from scratch, with new computer tools and more data than has ever been used, they will arrive at an independent assessment of global warming. The team will also make every piece of data it uses – 1.6bn data points – freely available on a website. It will post its workings alongside, including full information on how more than 100 years of data from thousands of instruments around the world are stitched together to give a historic record of the planet's temperature.

Muller is fed up with the politicised row that all too often engulfs climate science. By laying all its data and workings out in the open, where they can be checked and challenged by anyone, the Berkeley team hopes to achieve something remarkable: a broader consensus on global warming. In no other field would Muller's dream seem so ambitious, or perhaps, so naive.

"We are bringing the spirit of science back to a subject that has become too argumentative and too contentious," Muller says, over a cup of tea. "We are an independent, non-political, non-partisan group. We will gather the data, do the analysis, present the results and make all of it available. There will be no spin, whatever we find." Why does Muller feel compelled to shake up the world of climate change? "We are doing this because it is the most important project in the world today. Nothing else comes close," he says.

Five years ago, a group like Studiomates probably wouldn’t have been a group at all but rather two dozen strangers in search of a Wi-Fi signal at Starbucks. The 26 members, who each pay $500 a month for a desk, are mostly engaged in independent projects in unrelated fields, and have no practical reason to work together. But as the new media pundit Clay Shirky said at the South by Southwest conference in March, “we systematically overestimate the value of access to information and underestimate the value of access to each other.”

“Sure, we could all be home doing what we do, but why would we?” Tina Roth Eisenberg (a k a swissmiss) said as her studio mates clacked away at their MacBooks. “I just like being around nerdy creative people all day long. It helps make sense of all the information coming at us.” Studiomates is an especially information-oriented bunch, and an influential one, too. In addition to her swissmiss blog and Twitter following of 200,000, Ms. Eisenberg is the founder of Creative Mornings, a popular monthly speaking series that has young designers in four cities talking.

Much of the content for her blog and Twitter feed comes from the casual conversations at Studiomates. “The day-to-day distraction level may be slightly higher,” Ms. Popova said. “But in terms of the influx of the building blocks of productivity — ideas, story tips, the interesting people who come in — an environment like this is priceless.”

Although the atmosphere at the Troxy was very genial, and Žižek generally enthusiastic about WikiLeaks (as he was in the London Review of Books article he published about it), there was a distinct tension between the rather standard Enlightenment rhetoric employed by Assange (more facts, a more complete historical record, better educated journalists)  and the significantly more radical conclusions the philosopher was drawing. This is why - whilst it should no doubt be read in a similar light as Žižek’s own remarks on his position during the conversation (I feel now like that Stalinist commentator: the leader has spoken, I provide the deeper meaning) - the ventured analogy nevertheless contains a kernel of truth beyond its bombast: defining the emancipatory significance of phenomena should not be left to the actors alone.

in response to Goodman's initial question on the significance of the Iraq war logs, Assange primarily emphasized the concrete revelations WikiLeaks had provided. He mentioned the 400.000 cables leaked, 15.000 previously unreported deaths revealed, a video of an American helicopter mowing down civilians, and so on. In contrast, Žižek went far enough to say that even if WikiLeaks had not revealed a single new thing, it should be considered game-changing. Why? Because of the very way it functions. For the philosopher, our democracies not only have rules regarding what can be revealed, but also rules which regulate the transgression of those first rules (the independent press, NGOs, etc). The contention then is that WikiLeaks operates outside both these sets of rules, and that there is the source of its power.

the reply was firmly anchored in the key trope Žižek has championed since his first major work in English: that ideology in today's "post-ideological" world is not dead, but rather more powerful than ever - alive not so much on the level of knowledge but in the ways it structures social reality itself.