[s-shellfish]

I don't agree with this. And honestly, I really think that depends on what foundation you rely on to think with, work with, create with, test with, and check your own tests with. Physics does not have to use itself to understand itself. Math does.

[Numer]

> Physics does not have to use itself to understand itself.

Could you explain what you mean by that?

[s-shellfish]

It's simple. Physics uses mathematics to construct equations that describe properties of physics.

The difference is physics has reality to test against - observations that can be measured. Math does not have this. Math's only metric against itself is itself.