Why do fingers become pruney? - Mark Changizi
111,939 Views
2,712 Questions Answered
TEDEd Animation
Let’s Begin…
Why do fingers become pruney when they get wet? Likely, for the same reasons that tires have treads. Mark Changizi examines the evolutionary reasons for pruney fingers, while exploring natural and manmade phenomena, like river networks, that operate similarly.
Although the “rain tread” hypothesis predicts both (i) the shapes of the wrinkles and (ii) the results of the behavioral experiment, which of these successful predictions provides greater support for the hypothesis?
Sign in to answer questionAbout TED-Ed Animations
TED-Ed Animations feature the words and ideas of educators brought to life by professional animators. Are you an educator or animator interested in creating a TED-Ed Animation? Nominate yourself here »
Meet The Creators
- Director Lippy
- Educator Mark Changizi
- Narrator Mark Changizi
