I doubt it. I don't get why people keep thinking again and again that even the most basic things humans do are entirely new never-before-seen innovations. There

I doubt it. I don't get why people keep thinking again and again that even the most basic things humans do are entirely new never-before-seen innovations. There are animals with built-in birth control (sex, but no pregnancy unless the female "enables" it), and I doubt condoms are half as effective as that. Nature has experimented a LOT with every form of procreation you could possibly come up with. It seems to me very unlikely that something as stupid as condoms are going to catch it off guard. You wouldn't see the second part of the S-curve unless there was at least statistical birth control (ie. that individuals in those species controlled at least the odds of offspring).