I didn’t claim an algorithm was specified by its postcondition; just that saying “agree that X is a good thing without knowing what X means” is, for algorithms X, equivalent to “agree that X is a good thing before we possess X”.
I didn’t claim an algorithm was specified by its postcondition; just that saying “agree that X is a good thing without knowing what X means” is, for algorithms X, equivalent to “agree that X is a good thing before we possess X”.