Dak
mentat
The original tweet is insinuating that birth control is an undesirable form of liberation from biology because it's imposing sterility "upon the whole of humanity." So the implied argument seems, to my eyes, to be that birth control methods are bad elements of women's liberation because they allow women to avoid their biological responsibility to procreate (or something of the sort). I was confused because I didn't (and don't) see how simply postponing childbirth to a future date is circumventing childbirth (entirely, that is).
It isn't circumventing it entirely (well, until it is). Egg and sperm quality decline with age, and waiting until 30+ to have children leaves a narrow window for having children if you are still able to achieve pregnancy. So even if women decide they might want more than 1.7 children, they may be unable to.
I dunno, but breeding just for its own sake seems ridiculous to me, especially if we're talking about a sterility that won't truly impact the human species for thousands of years.
......
According to the IUCN, an endangered species is one that meets any one of the following criteria: a 50–70% population decrease over 10 years, a total geographic area less than 5,000 km2 (or local population area less than 500 km2), a population size less than 2,500 adults, a restricted population of 250 adults, or a statistical prediction that it will go extinct within the next 20 years.
I think we'll be fine.
The effect on the species will be much faster than thousands of years, because the ramifications extend beyond simply "less people are being born now than before."