[int_19h]

It's also worth keeping in mind just how many humans there are today compared to historical figures. If 90% of the population were to drop dead tomorrow for one reason or another - say, a combination of pandemic and side effects from the economic disruption that it would cause, like starvation - Earth would still have 800 million people alive. Last time there were that many was less than 300 years ago.

Now consider how fast it would rebound given that those remaining 800 million would rebound, given that they'd have vastly more knowledge and resources (even just having access to pre-mined materials alone is a massive boost!).