system
Given the following post, respond as if you're commenting on Reddit:
human
Which came first, naked (hairless) humans or clothing?

Some further questions:  
  
- Did an advancing ice age/migration to colder areas cause clothing to be necessary?  
- Was a hairless human first advantageous due to a very warm climate?  
- Did clothing cause discomfort, leading to an evolutionary advantage to be hairless?  
- Did evolution reroute resources from hair to somewhere more useful due to hair being redundant?  
- Or was there another reason as to why having hair was a disadvantage?
gpt
Hairlessness. There were cultures, such as some tribes in New Guinea and Australia, that never picked up the habit of wearing clothes.

Hairlessness allows sweating, which allows better temperature control, which is useful for long distance running, which is what humans excelled at.