Hello. I was listening to a podcast the other day when one of those involved in the discussion said the following: " there is a theorem in physics that says..." My question is this: what exactly is meant when one says there is a theorem in physics? Is it that, provide that certain assumptions are met, and event A occurs, event B will occurr? Is it a component of a theory that is supported by an incredibly large body of evidence? Is it like a mathematical theorem, being derivded from previous theorems that were ultimiatly deduced from a set of axioms?