Comment by woopwoop24

you don't need to simulate everything in a big monolith and with all the complexity of everybody in it, that does not scale well.

You only need to simulate the perspective of you and what you can see, observe and the interactions you make right now.

Same as video games just render in a certain radius around you.

That scales well per human. Heck everybody around you might be an NPC and you will never know