There is the idea sometimes stated that because child mortality was so high in the past parents had kids but avoided loving them - because odds were against the child living past 5 and if you love your kids you then have heartbreak when they die.
Historians disagree with that idea (at least for most cultures?). However I've heard it more than once. This just gives more data to the idea that humans loved each other enough to take care of injured.
Wasn’t child mortality only super high in dense population settings relatively recently? Like if you are a tribe in the middle of nowhere in Northern Europe 20k years ago, for example, you are probably not exposed to much contagious disease. Disease is a network phenomenon, and prior to modern medicine humans had increased network speeds and connectivity massively, but that wasn’t the historical norm, was it?
Historians disagree with that idea (at least for most cultures?). However I've heard it more than once. This just gives more data to the idea that humans loved each other enough to take care of injured.