Except things like law exist in a measurable state. Violating a law has a measurable outcome in the physical world. That’s the difference. If you run a stop sign in the presence of observers such as a police officer (such that it has an impact on that observer) you will be issued a citation for violating that law. We can test that hypothesis.

If something has no measurable presence under any observable state it is indistinguishable from that which does not exist. And to assume it does is tautological and a fallacy.