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January 29, 2012

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Beautiful ideas

NEUROBIOLOGIST Sam Barondes of the University of California, San Francisco, nominates the idea that personality is largely shaped by chance. One serendipitous force is which parental genes happen to be in the egg and sperm that produced the child.

"But there is also chance in how neurodevelopmental processes unfold - a little virus here, an intrauterine event there, and you have chance all over the place," he said. Another toss of the dice: how a parent will respond to a child's genetic disposition to be outgoing, neurotic, open to new experience and the like, either reinforcing the innate tendencies or countering them.

The role of chance in creating differences between people has moral consequences, says Barondes, "promoting understanding and compassion for the wide range of people with whom we share our lives."

Timothy Wilson nominates the idea that "people become what they do." While people's behavior arises from their character - someone returns a lost wallet because she is honest - "the reverse also holds," says the University of Virginia psychologist. If we return a lost wallet, our assessment of how honest we are rises through what he calls "self-inference." One implication of this phenomenon: "We should all heed Kurt Vonnegut's advice." Wilson says: "We are what we pretend to be, so we must be careful about what we pretend to be."

Psychologist David Myers of Hope College finds "group polarization" a beautiful idea, since it explains how interacting with others tends to amplify people's initial views. In particular, discussing issues with like-minded peers - increasingly the norm in the United States, where red states attract conservatives and blue states attract liberals - push people toward extremes. "The surprising thing is that the group as a whole becomes more extreme than its pre-discussion average," he said.

Martin Rees, professor of cosmology and astrophysics at the University of Cambridge, nominates the "astonishing concept" that what we consider the universe "could be hugely more extensive" than what astronomers observe.

If true, the known cosmos may instead "be a tiny part of the aftermath of 'our' big bang, which is itself just one bang among a perhaps-infinite ensemble," Rees writes. Even more intriguing is that different physics might prevail in these different universes, so that "some of what we call 'laws of nature' may ... be local bylaws."




 

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