[Picture of text that reads:]
Years ago, anthropologist Margaret Mead was asked by a student what she considered to be the first sign of civilization in a culture. The student expected Mead to talk about fishhooks or clay pots or grinding stones.
But no. Mead said that the first sign of civilization in an ancient culture was a femur (thighbone) that had been broken and then healed. Mead explained that in the animal kingdom, if you break your leg, you die. You cannot run from danger, get to the river for a drink or hunt for food. You are meat for prowling beasts. No animal survives a broken leg long enough to heal.
A broken femur that has healed is evidence that someone has taken the time to stay with the one who fell, has bound up the wound, has carried the person to safety and has tended the person through recovery. Helping someone else through difficulty is where civilization starts, Mead said
So it's cute and could have some relative usefulness but there are some problems with this mythical anecdote:
animals heal broken legs all the time. It's not a guaranteed death sentence, if it were there actually wouldn't even be a way to repair it at all. See: brain, lungs, heart. All things which can very slightly repair themselves from minor injuries, not catastrophic ones.
bipeds are worse off, but quadrupeds can generally manage, poorly, with only three legs. There are exceptions, but that's one of the main benefits of having four legs.
a broken femur can already be a death sentence regardless of early medicine. Very easy to bleed out, the actual maiming is the least of your worries.