Ben van Kerkwyk

I mean, I just – it boggles the mind.

It's like they were using that scooping tool or whatever to do it.

Yeah.

You know, some people suggest some of them may have been like little – I mean, they're really – there are different types of nubs.

The subtle ones –

Not all work is lifting nubs.

Some people say in the geopolymer world where they say, well, stones were formed or cast, they'll say, well, these are like heat expansion points.

I've heard good theories from certain people that suggest it had something to do with the mass of the stone, like as you change the mass of a stone, it's whatever resonant frequency it has might alter.

Because you also have scoops.

You have nubs and you have scoops.

So you seem to have this reduction of mass and then there's more mass in another place.

So maybe it had something to do.

These are different theories I've heard.

I don't have a good explanation for them.

It's so weird how it never comes up again in human history.

Yeah, we don't make stuff with knobs.

It's weird.

It is weird.

Well, it's a commonality.

It's one of those other indicators.