I occasionally use the expression objective public proof. I’ve recently been asked what I mean by it. Let me take the phrase apart just a bit. “Proof,” as the word is typically used and as I am using it here, is a fact or a piece of information that demonstrates the existence of something or, more broadly, the truth of a proposition. In mathematics, which (along with formal logic) probably illustrates the notion of “proof” most clearly, a proof... Read more