Because it's reasonable to expect that some small segment of the population, due to some combination of genetics and culture, will (1) think it's a great idea to have lots of children; and (2) think it's a great idea to pass (1) and (2) on to said children. And in fact I think we are already seeing this in ultra-religious communities.
But wasn't the entire population fitting into these categories in the last 200,000 years? Why do you think the current ultra-religious communities will survive when so many haven't?
Antibiotics create immune bacteria, but only when you administer it sporadically. The current depression factors on fertility don't seem to be sporadic.
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But wasn't the entire population fitting into these categories in the last 200,000 years? Why do you think the current ultra-religious communities will survive when so many haven't?
Antibiotics create immune bacteria, but only when you administer it sporadically. The current depression factors on fertility don't seem to be sporadic.
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