Comments by "Christopher Bruns" (@user-td4pf6rr2t) on "PBS Eons" channel.

I think during the ice age it was more important to stay dry than warm. Since getting wet would cause to decrease in core body temperature. So adapting to this is why accelerated fur lose. Especially as we reached a level of apex predation evolution further this gapped since free time was used less on hunter gathering and could be spent on things like using beads to attract mates.
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