Besides helping with forensic identification, what useful function do fingerprints serve?
Answer:
The tiny ridges of your fingerprints add a little friction for holding things, but their biggest function is in feeling textures. Try rubbing side of your hand across several different kinds of cloth, and then compare that with the way the cloth feels with your fingertips. The ridges catch on any roughness, and give you a much more pronounced difference between different textures.
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