system
Given the following post, respond as if you're commenting on Reddit:
human
From an evolutionist standpoint, if warmth is necessary for survival, why did humans evolve without fur?

it just seems counterproductive to me. if we started out as monkeys why would we lose that warmth.
gpt
We lived in warm places and didn't need fur to live.  Losing it made us cool down better when exercising, enabling us to endurance-hunt other animals who cannot exert themselves as much continuously over a long time.