All humans who have ever lived

https://infosec.pub/post/14030463

All humans who have ever lived - Infosec.Pub

The visualization is strange for this because the hour glass implies that the is a finite number of humans that can live but at the same time it is refilled from the top continously.

What happens in a billion years will it overflow?

Am I the only one with this problem?

I had the same thought. The top part is filling up faster than it’s emptying out… At some point it’s going to be too full. Was that point like 100 years ago?