What is the nails function as an appendage of the skin?
Nails rather than claws, delineate us from other orders of species taxonomically. It is possible that we developed nails rather than claws as we evolved ,we became better hunters using guile and skill to get prey as well as weopons, even in chimpanzees rocks and sticks (as well as brute force has been observed) therefore claws were less necessary but nails remained to allow clinging to objects through application of pressure, this may also be the reason why we have evolved away from having whorl fingerprints (greater grip on branches) to other patterns such as loops and arches.
