LateNightMuffin
kiwifarms.net
- Joined
- Jul 25, 2019
While it's true that humans didn't generally reproduce into old age, the average lifespan of 30 to 40 doesn't mean that most humans barely survived into their 30s, and both archeology and written records in literate places support that this isn't accurate. yes, average lifespan was 30 to 40, but that's because of high infant mortality rates. As with many large mammals, if we survived past early childhood (and if women didn't die in childbirth or men in warfare or accidents) we probably lived a reasonably long time. If you have people who live to be 1, 2, 1, 60, 60, and 60, the average lifespan is still less than 40.Related fact: for the 99% of their time on Earth, humans barely survived to their 30s or produced children past that age,
Another exception to this is cities up to the invention of modern sanitation. Cities were population sinks until then, with the lifespan of poor people moving into London being, I think, about 18 months.
None of which alters the fact that yes, once we are no longer able to bear or raise children, nature stops caring so much about how our joints feel, and how quickly we recover from injury.