A priori

From Geography

A priori is a form of knowledge or justification that is independent of experience. For example the knowledge that one that is married is not a bachelor. If you know that person A is married you do not to have to go out and experience or analyze anything to be able to conclude that person A is not a bachelor. A priori refers also to a sort of ‘inner-experience’. The opposite of a priori is a posteriori, a so called ‘outer-experience’. Whereas a priori refers to temporally ´before`, a posteriori hints at a temporal ´after`.