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http://www.lrb.co.uk/v29/n20/jerry-fodor/why-pigs-dont-have-wings


notes =Edit

Fitness was a metaphor for survival in Darwin's days:


http://en.wikipedia.org/wiki/What_Darwin_Got_Wrong

"....Because these traits come together, they are both correlated with fitness...."

rephrase:

Because these traits come together, they are both correlated with survival.

Which is a truism.

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