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This is it. Evolutionarily, 30-35 is extremely late for procreation in humans. That doesn't give you enough time to raise them before you die at around 45 (ar
by pclmulqdq 4y ago
This is it. Evolutionarily, 30-35 is extremely late for procreation in humans. That doesn't give you enough time to raise them before you die at around 45 (around the life expectancy of wild humans).
- nhchris 4y agoEven supposing children are raised communally by the tribe, female fertility rapidly declines post-30, and falls off a cliff post-35: https://www.britishfertilitysociety.org.uk/fei/at-what-age-does-fertility-begin-to-decrease/ https://www.britishfertilitysociety.org.uk/fei/at-what-age-d... So you have very few fertile years left into which to fit multiple healthy children. 2.1 is needed to merely sustain a population (with all the medicine of industrialized society to keep them alive). For "wild" humans, that number would be considerably higher.
- amanaplanacanal 4y agoLife expectancy at birth, maybe, but if you lived long enough to reproduce your life expectancy was much longer than that.
- pclmulqdq 4y agoThat's true of most of the civilized period when humans were relatively safe from predators. Most of human history was not like that. As far as I know, hunter-gatherer humans without this form of safety generally didn't live past 40 except in exceptional cases, even if they survived as a child.