section_path: Epistemology
section_name: Epistemology
paragraph_text: Epistemology
  
  Epistemology is concerned with delineating the boundary between justified belief and opinion, and involved generally with a theoretical philosophical study of knowledge. The primary problem in epistemology is to understand what is needed to have knowledge. In a notion derived from Plato 's dialogue Theaetetus, where the epistemology of Socrates most clearly departs from that of the sophists, who appear to have defined knowledge as " justified true belief ". The tendency to base knowledge (episteme) on common opinion (doxa) Socrates dismisses, results from failing to distinguish a dispositive belief (doxa) from knowledge (episteme) when the opinion is regarded correct (n.b., orthé not alethia), in terms of right, and juristically so (according to the premises of the dialogue), which was the task of the rhetors to prove. Plato dismisses this possibility of an affirmative relation between opinion and knowledge even when the one who opines grounds his belief on the rule, and is able to add justification (logos: reasonable and necessarily plausible assertions/evidence/guidance) to it. A belief can be based fully or partially on intuition.
  
  Plato has been credited for the justified true belief theory of knowledge, even though Plato in the Theaetetus elegantly dismisses it, and even posits this argument of Socrates as a cause for his death penalty. The epistemologists, Gettier and Goldman, have questioned the "justified true belief" definition.