Brian Greene

We don't know very much observationally, sure.

We can't see them.

We don't know very much experimentally.

So they're definitely on a very different footing from that perspective.

emanating through the walls we might be able to listen in he says and take a couple of measurements which would be quite wonderful and in that case at least there's a chance that we'd get observational evidence of the existence of these other realms and at that point i would begin to say hmm maybe there's something really to this so the physics you're doing says i can't go there i can't observe it at least for the moment all i have is my brain and my math

The things that you were describing need not always be the case.

Really?

Yes.

What would be the case is that the fundamental governing equations, the mathematical laws, would be the underlying architecture that governs what happens in those places.

But environmental details can change things fairly dramatically.

Gravities and environmental details?

Yes.

That's actually something you know at some level right now, right?

On the moon, you could jump a lot higher than you can here.

So if you didn't realize... But I do think that two bodies do attract each other.

That's right.

So there is a fundamental law of gravity that manifests itself in different ways based on the environment.

All right, so let me say that again, or ask it again.

Are there fundamental laws that you think operate in all universes?

Yes, yes, absolutely.