So what? My point wasn't that lots of people wouldn't die, it's that it's remarkably hard to kill all humans. Even if 90% of people died to a disease, people f

So what? My point wasn't that lots of people wouldn't die, it's that it's remarkably hard to kill all humans. Even if 90% of people died to a disease, people fighting killed 90% of the ebola survivors, and famine killed 90% of the fighting survivors, we'd still have 7 million humans left on Earth. Nothing you've outlined even pushes us out of the millions of people alive range - not by a longshot, considering none of those things mentioned above would actually be 90% deadly. My point was entirely that it's not an existential threat to humanity, and the only things that can actually pose such a threat are environmental (eg, the planet enters a new ice age, but even this might not be existential) or astronomical scale (meteors, gamma ray bursts, etc). Ed: Using slightly more reasonable numbers of disease killing 60%, fighting after killing 60% of the disease survivors, and famine killing 60% of the fighting survivors, over one billion people would be left on the planet. A catastrophe bigger than anything we've faced before, for sure, but not an existential threat to the species.