system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How did our ancestors get by barefoot?

How did neanderthals and all those primitive ancestors hunt and evade predation without any shoes? We go berserk if we so much as step on a lego. How did they run about with small pebbles and rocks on the ground and in the grasslands?
gpt
If you have ever walked on bare sufaces long enough you would begin to form thicker skin on the souls.

If you look at a lot of outdoors living people there feet are like god damn leather. Also rudimentary shoes have been found with early humans. We originated in hot areas, so frostbite wasn't too much of an issue.