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Dans le New Yorker, la psychologue Maria Konnikova (@mkonnikova), l’auteure du bestseller Mastermind, comment penser comme Sherlock Holmes ? revient sur plusieurs études de confrères sur les usages de Facebook, montrant des résultats contradictoires. Certaines montrent que Facebook rendrait ses utilisateurs tristes, comme c’est le cas de celle dirigée par Ethan Kross, directeur du laboratoire sur l’émotion et l’auto-contrôle de l’université du Michigan (et qui rappelle les résultats de Robert Kraut (Wikipédia), qui, en 1998, avait montré que plus les gens utilisaient l’internet, plus ils se sentaient seuls et déprimés), et d’autres prouvent exactement le contraire.

Algorithms, simple functions that hover between mathematical problems and computer programs, are everywhere. Whether dealing with lost packets when using Wi-Fi, or getting your credit-card details securely to an online store, most consumer technology couldn’t work without some ingenious solutions to common problems. And when Google decides to change its search algorithm – as it did with Hummingbird last week, it can make or break whole companies. Here are just five which you couldn’t live without.

Regardez ce qui s’est passé en 2008 : l’Etat américain n’a pas hésité à intervenir pour sauver l’assureur AIG en renflouant ses pertes, sans poser aucune condition. Pourquoi ne fait-on pas la même chose avec les Etats européens en difficulté ? Parce qu’ils sont considérés comme les mauvais élèves de la zone euro. Dans ce cas, la morale entre en ligne de compte alors qu’elle n’a que peu joué, finalement, dans le sauvetage des établissements financiers.

Then she went to Finland, where only top students get into teacher-training programs. “What I hadn’t realized was that setting a high bar at the beginning of the profession sends a signal to everyone else that you are serious about education and teaching is hard,” Ripley told me. “When you do that, it makes it easier to make the case for paying teachers more, for giving them more autonomy in the classroom. And for kids to buy into the premise of education, it helps if they can tell that the teachers themselves are extremely well educated.”

The Nozickian view implies what, from the perspective of common sense morality, is absurd: that a desperate person who sells her organs or body does so freely, that it’s fine to pay someone a paltry sum while profiting hugely off their labor, that people deserve to get rich because of accidents of birth, that there’s nothing wrong with walking by a drowning man. Thus Nozick’s view must be wrong: justice is not simply the unfettered exercise of the free market. Free market “morality” isn’t anything of the sort.

At first blush, Mr. Shiller’s thinking about the role of “irrational exuberance” in stock markets and housing markets appears to contradict Mr. Fama’s work showing that such markets efficiently incorporate news into prices. What kind of science, people wondered, bestows its most distinguished honor on scholars with opposing ideas? “They should make these politically balanced awards in physics, chemistry and medicine, too,” the Duke sociologist Kieran Healy wrote sardonically on Twitter.

Fine, go to those Bangalore Infosys centres, but just for the hell of it go three miles aside and go look at the guy living with no toilet, no running water,” Gates says now. “The world is not flat and PCs are not, in the hierarchy of human needs, in the first five rungs.