it doesn't really seem like an important question anyway. suppose 150 is a large enough population to allow for humans to reproduce naturally without introducin

it doesn't really seem like an important question anyway. suppose 150 is a large enough population to allow for humans to reproduce naturally without introducing too many genetic defects. it's a cool fact, but 150 is not nearly enough to have people that specialize in all the skills needed to support modern life. a more interesting question might be how many humans are necessary for some target rate of quality of life improvements (and how does that rate respond to increasing/decreasing the population). this is probably more of a political/economic question though.