The ones with high growth rate of shoulders just died inside, probably even taking their mothers with them.
AthKaElGal
Some fetuses need their collar bones broken for a successful delivery. I imagine this wasn’t standard procedure in caveman times so broad shouldered babies and their mothers may have reduced themselves in the gene pool.
Human-Firefighter755
I mean, it’s still not that easy to squeeze through. Get your head in the game, evolution.
drinkingwithmolotov
I hate when “intent” is given to natural processes, especially evolution.
eodtec1985
It’s not that they do it for a reason – they just do it – the reason is the idea overlaid onto this reality.
insaneintheblain