We all get them. The little wrinkles that turn our finger tips into raisins after time in a swimming pool or even just your daily shower. But why on Earth do we need "pruney" fingers? Evolutionary neurobiologist Mark Changizi
from 2AI Labs
in ID is challenging our common perceptions about the wrinkling of our finger tips. Contrary to popular belief that the changes in our fingers are caused by the absorption of water, Changizi believes the wet finger wrinkles may be a valuable adaptation that allows us to grip objects better under slippery conditions.
According to Changizi, the wrinkles may act like rain treads on tires, creating channels that allow water to drain away when our fingers are pressed against a wet surface. This would allow the fingertips to make more contact with the wet surface, thus having a better grip. But Changizi's hypothesis is not without skeptics.