My Ukrainian ex would say this dripping with sarcasm when she was pissed. It was adorable.

“Oh, THIS CHANGES EVERYTHING!”

Two points do not make a line. Just sayin’

For starters, they confused “theory” and “theorem”. Theorem is not something that is "true until proven wrong, it’s a logical proof that something works as it works, going from axioms (which are considered true “by design”, if you don’t want to reinvent geometry again), to other theorems and lemmas, establishing or confirming every statement.