I don't know that this is true. Do previous ice ages not count? Or how about the plague? It seems that we've been near extinction at least a few times: https:/

I don't know that this is true. Do previous ice ages not count? Or how about the plague? It seems that we've been near extinction at least a few times: https://en.wikipedia.org/wiki/Population_bottleneck https://en.wikipedia.org/wiki/Population_bottleneck I'd also add that until the 1990s the threat of total nuclear annihilation of the human race (and probably other stuff) was very real. That was anxiety inducing.