War won't end human existence. If there's one thing you can learn from the recent wars in Iran and Ukraine, it's that conventional air-bombing has acquired a terrible cost:efficacy ratio that cannot be sustained, that drones have leveled the playing field on the ground, and that attackers generally appear to lack the stomach for mass mobilization and mass casualties in war.

Again, there'll be winners and losers. Some in fortresses; others in famines and droughts. It is, of course, imperative that we do what we can do now to mitigate this. But the continuation of the human species is, I am sure, not in doubt. Our ancestors in prehistoric times have, assuredly, gone through FAR worse, including real population bottlenecks.