It’s an arbitrary human rule, not fundamental knowledge. Quite understandable how someone may not have the interest or knowledge to know this nuance (perhaps to

It’s an arbitrary human rule, not fundamental knowledge. Quite understandable how someone may not have the interest or knowledge to know this nuance (perhaps to their own detriment). It’s somewhere along the spectrum of the knowledge of arcane laws, for example. The federal tax code perhaps isn’t ’arcane’ by popular consensus in educated circles, but it’s on the spectrum of arbitrary human knowledge that keeps changing and evolving. Would you be shocked if a CPA knows more about this than a theoretical physicist?