>widely-accepted hard science, e.g. “2 + 2 = 4”.

Except we live in a world where people do argue 2+2 could also be 22 ( Because they use Javascript /s ) Which is basically people believe what they want to believe in. Rationale rarely works.

2+2=4 is only a formal truth up to the axioms of arithmetic and how we denote numbers. The statement is not statement with regards to objective reality.