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11:23pm on Thursday the 18th of April
NOW YA TELL ME
Why Banging Your Sister Is Icky

A study offers new evidence that natural selection drives the incest taboo. On average, your level of disgust at the notion of sex with a sibling correlates with how long you cohabited with that sibling and watched your mom care for her as a small child. So does your level of altruistic behavior toward the sibling. These experiential factors correlate more strongly with incest aversion than does your belief that the sibling is genetically related to you. The researchers posit a mental "kinship estimator" that converts "maternal perinatal association" into altruism and sexual disgust, driving you to choose a mate outside your family. Old idea: Nature makes you horny for your sister, but faith teaches you it's icky. New idea: Nature tells you it's icky, and faith takes the credit.
Slate.com digg this
Now I'm more confused than ever... my sister's name is Faith!
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