There is some truth in this. Two and two will never be five. Unfortunately I most often see the notion of eternal unchanging truth invoked to defend very tempo

There is some truth in this. Two and two will never be five. Unfortunately I most often see the notion of eternal unchanging truth invoked to defend very temporal and mutable things: cultural and aesthetic biases, social and economic hierarchy, gender roles, racial stereotypes, religion, the state, etc. People wish to rub some of the eternal truth of math and logic onto their favorite idols but it never sticks. Human hierarchy and symbol are very mutable. Nobody bothers to pound the table about the eternal truth of actual eternal truths. There's no point.