system
Given the following post, respond as if you're commenting on Reddit:
human
Why does the Night's Watch in Game of Thrones not wear hats?

Some of them do, but you watch them walking through a blizzard and only about 10% will be wearing hats.
gpt
Hats, hoods and helmets interfere with your hearing. So, rangers started making a point of going bare-headed when scouting in order to avoid being ambushed (and also to show everyone how tough they were). Other members of the Night's Watch started imitating the rangers, until it became something of a point of pride for all the 'crows' to always go bare-headed.