A priori reasoning originates from a Latin word which means, “beforehand.” Knowledge gained from experience is called a posteriori, and knowledge that doesn’t require experience is called a priori.[1] Our primary concern here is with factual knowledge. For example, Little Italy is located in New York on the East Coast of the United States, Plato lived in Athens, Greece, and Seattle, Washington, is in the Pacific Northwest. This type of knowledge is often referred to as “knowledge that” or propositional knowledge because it involves statements or propositions that are [or can be] certain to be true.[2] There are compelling reasons to consider a priori knowledge as a valid form of knowledge. For instance, the statement “bachelors are unmarried men” indicates that a certain level of experience is needed to grasp the meanings of the words “unmarried”…