AMA | October 2024

11923.078 - 11944.909 Sean Carroll

Benjamin Zand says, my question is, how do we know the laws of physics and the physical constants are the same everywhere in the observable universe? Is this an assumption or can they be confirmed by observation? It's not an assumption. It's, you know, science doesn't really generally work by assumptions. It works by hypotheses. You make a hypothesis. You say maybe things are this way.