A priori and A posteriori knowledge.

The Latin term, “a Priori”, literally translates to mean “before”. A priori knowledge therefore is derived from what are believed to be innate ideas. Such ideas are mathematical, for example “2+2=4”, is considered to be a priori. The argument it refers to argue from logical standpoints. “A posteriori” then literally means “after”. This knowledge is derived solely from experience/observation. It is arguable that all knowledge falls under this category, and that a priori knowledge is redundant (This idea is endorsed by the likes of Locke and Hume). A posteriori knowledge is similar if not identical to empiricism.