"Wet fingers and toes eventually wrinkle, and this is commonly attributed by lay opinion to local osmotic reactions. However, nearly a century ago surgeons observed that no wrinkling occurs if a nerve to the finger has been cut. Here we provide evidence that, rather than being an accidental side effect of wetness, wet-induced wrinkles have been selected to enhance grip in wet conditions." — From "Are Wet-Induced Wrinkled Fingers Primate Rain Treads?," a recently-published paper co-authored by Mark Changizi.
Do wrinkled fingers help us grip?
Short Post, just one paragraph
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