This always really messes with me. We have a tendency to view our current civilization as permanent, but we could easily lose all of this progress with a few we

This always really messes with me. We have a tendency to view our current civilization as permanent, but we could easily lose all of this progress with a few well-timed famines and be reduced back to barely-bronze-age tribes in the span of a few decades. We could collapse, nearly entirely disappear and face another genetic bottleneck event, then have to rediscover all of our current society some two or three thousand years in the future and the Universe wouldn't even have ticked a single second in the grand scheme of things.