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Pragmatic philosopher. He claimed that there are four ways of knowing something. Tenacity, Authority, Common Sense argument, a posteriori logic. (also tell me what each of those are)
What is Charles Sanders Peirce
Tenacity - believing something is true based on desire to believe it
Authority - Someone that you(or others) believe to be an authority figure claims something is true, and because of this persons authority, you believe it is true
Common Sense argument - argument that sounds logical but without actual data or observations
A posteriori Logic - Scientific way of knowing that verifies knowledge based on actual experience or data