system
A chat on 4chan
human
A global, advanced civilization like ours? Probably zero or close to it. Something less advanced could probably have existed and not appear at all in the fossil record. Hell, plenty of human civilizations were stone age or close to stone age a few hundred years ago. Just because you can develop some level of intelligence and civilization doesn’t mean that you will be smart enough to actually progress, so you could definitely have had some type of shit tier civilization that persisted for a period before going extinct, leaving no or few traces. There are massive gaps in the hominid fossil record and contrary to what people say, your shitty stone axe is not going to look like a stone axe after millions and millions of years, it’s going to be a misshapen rock. We find decently preserved stone age shit inside caves, but imagine what it would look like in millions of years, given that in 10 thousand, most of it is already in an advanced state of decay. There are plenty of human populations that have left pretty much zero archeological traces of civilization, even though they were certainly intelligent.
gpt
if our civ ended today and we restarted in like 10k years there would be nothing left of us, the only things that would survive would be big stone structures like the pyramids

so its rather strangely likely that this isnt even the first time we became this advanced
human
you need to expand your world-view a little
we have plenty of shit that will last, not including all the shit we have in space and on the moon