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"Why has cooperation, not competition, always been the key to the evolution of complexity? MARTIN NOWAK is a Mathematical Biologist, Game Theorist; Professor of Biology and Mathematics, Director, Center for Evolutionary Dynamics, Harvard University; Author, SuperCooperators: Altruism, Evolution, and Why We Need Each Other to Succeed."

"Would you be better off paying for online newspapers like this one? Should you feel guilty about downloading free music? Is the Web's "information-wants-to-free" culture hurting writers, musicians and the rest of the "digital peasants," as Jaron Lanier calls us, now providing unpaid content to be exploited by the "lords of the clouds" like Google? In my Findings column, I discuss Mr. Lanier's new book, "You Are Not A Gadget," a manifesto decrying the Web's effect on individual creativity. (You can see excerpts of his criticism at Edge and at Cato Unbound.) Mr. Lanier mentions this newspaper as one of the victims as well as the promoters of the Web's ideology. "The New York Times," he writes, "promotes so-called open digital politics on a daily basis even though that ideal and the movement behind it are destroying the newspaper and all other newspapers. It seems to be a case of journalistic Stockholm syndrome." Mr. Lanier also faults himself: "

"Social butterflies who shine at parties may get their edge from special genes that make them experts at recognizing faces. Scientists have found the strongest evidence to date that genes govern how well we keep track of who's who. The findings suggest that face-recognition and other cognitive skills may be separate from each other, and independent of general intelligence. This could help explain what makes one person good at math but bad at music, or good at spatial navigation but bad at language "People have wondered for a long time what makes one person cognitively different from another person," said cognitive psychologist Nancy Kanwisher of MIT, coauthor of the study published Jan. 7 in Current Biology. "Our study is one tiny piece of the answer to this question." The ability to recognize faces is not just handy for cocktail parties, it's crucial for distinguishing friend from foe and facilitating social interactions. If face recognition increases our ability to fend off predators and find mates, there is an evolutionary drive to encode this ability in our genes. To test this, Kanwisher's team looked at whether the ability to recognize faces runs in the family. They found that identical twins, who share 100 percent of their genes, were more similar in their face-recognition ability than fraternal twins, who share only 50 percent of their genes. This suggests the ability to recognize faces is heritable."