Michael Button

Really?

Yeah.

As far as I can tell.

Cement buildings that would just deteriorate?

They would go like concrete would crack and you'd get CO2 in there and freeze-thaw weathering.

And over these huge timescales of like 5,000 years, 10,000 years, they would just crumble down into dust and be absolutely imperceptible.

Just 10,000 years?

I think so.

I mean, I'm just doing this off the top of my head.

I haven't got any notes in front of me or anything, but...

As far as I could tell from my research, it's going to be a few like 10,000 years, 20,000 years max.

It's not going to get up to these timescales of 100,000 years.

It would just get overrun by trees again.

Yeah, because it's just such an incredible amount of time that all these materials that we build with are just going to corrode.

And they're going to rust away if they're metals.

They're going to oxidize.

They're going to flake until they're just tiny little fragments that just disperse in the sedimentary record.

And they're just invisible to see.

And same with concrete.

Same with even things like glass.