Thread: If matter cant be created or destroyed, where did all this stuff come from?

Originally Posted by khh

I think you've noted that change does indeed exist with just about the purest, indeed elemental, of examples.

It's this bit that's too much for me

How so? Doesn't the transition of the ground state of an atom show real change, at a truly unequivocal level? If not, then what does it represent?