My guess is that it has to do with language. More specifically, it helps higher pitched sounds to resonate louder and more distinctively from other sounds.
We're The Only Ones With Chins - And We Don't Know Why | PBS Eons [13:46]
Submitted 3 weeks ago by ThorrJo@lemmy.sdf.org to anthropology@mander.xyz
https://www.youtube.com/watch?v=VkYITGZccMs
Comments
lvxferre@mander.xyz 3 weeks ago
showmeyourkizinti@startrek.website 3 weeks ago
When these thing pop up for some reason my default is assume sexual selection. Chins? sexual selection. Breasts, sexual selection. A sense of humor? Believe it or not sexual selection.
lvxferre@mander.xyz 3 weeks ago
Pretty much, but what is being selected for is also interesting. Perhaps it isn’t the chin itself, but the resonance and its effect on our voices.
naught101@lemmy.world 3 weeks ago
Gotta have something to rub in contemplation.
Cruxifux@feddit.nl 3 weeks ago
We don’t all have chins. Look at Mitch McConnell
morphballganon@lemmynsfw.com 2 weeks ago
Some people have two!
Adderbox76@lemmy.ca 1 day ago
It’s really because as soon as we evolved the ability to think abstract thoughts, we needed something to stroke knowingly while ruminating. Obviously.