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nassim
28/01/2009, 23h32
D'après vous, pourquoi les humains rougissent lorsqu'ils sont confrontés à des situations embarassantes (honte, mensonge...etc) ?

Interrogé par la revue "New Scientist", des chercheurs ont classé le rougissement comme le plus grand trou dont souffre la théorie de l'évolution. En effet, les scientifiques n'ont toujours pas compris pourquoi nos ancêtres nous ont transmis cette faculté de rougir qui est clairement un "défaut"!

Mère nature a-t-elle voulu nous punir lorsqu'on ment ou l'on se fait malhonnête ? :)

Blushing 'biggest gap in evolutionary theory'
Blushing is the biggest gap in evolutionary theory, say scientists who admit they can't explain why people turn red when they are embarrassed.

Two centuries after the birth of Charles Darwin, there is still no evolutionary explanation for why humans blush.

Frans de Waal, professor of primate behaviour at Emory University, Georgia, US, identified blushing as one of the last missing pieces in the jigsaw of human development.

Writing in New Scientist, he said: "We're the only primate that (blushes) in response to embarrassing situations, shame, or when caught in a lie and one wonders why we needed such an obvious signal to communicate these self-conscious feelings.

"Blushing interferes with the unscrupulous manipulation of others."

He speculated on whether early humans were subjected to selection pressures to keep them honest.

The magazine asked some of the world's leading evolutionary biologists to identify the biggest gaps remaining in Darwin's theory to mark the bicentenary of the scientist's birth.

More than one argued that there is still no evolutionary explanation for the origin of life itself.

Kenneth Miller, professor of biology at Brown University, Rhode Island, in the US, said: "We know a great deal about the creative chemistry of the early Earth, but not yet enough to solve this problem."

Chris Wills, professor of biology at the University of California, said: "The gap between ... a collection of molecules and even the most primitive cell remains enormous."

Other evolutionary biologists cited our ignorance of what the last common ancestor of humans and chimpanzees looked like; the lack of an agreed explanation for any of the distinctive physiological hallmarks of human beings; and the lack of understanding of the role of geographical isolation in stimulating the birth of new species.

source : Telegraph

http://i239.photobucket.com/albums/ff251/alg3rie/xcv333-1.jpg
La femme : "Mon Dieu, mon mari va m'étrangler lorsqu'il va découvrir mon amant entrain de prendre sa douche dans la salle de bain!"

Zeste
28/01/2009, 23h34
Certains c'est à cause de ca........

















:21: :puke:

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