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Originally posted by Dragadon
Actually...humans are evolving as we speak. ... study's show that in many humans, particularly those around 20 and younger (if I remember right) the thumb has become the most dexterous finger on the hand instead of the index finger. This was due, they said, to the use of things like mobile phones (and video game control pads, where many use their thumbs instead of their fingers to dail the numbers.
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I don't doubt that this is true, but if it is, it's from practice, not evolution. It is situational adaptation, not biological adaptation.