PHIL 1000 Lecture Notes - Lecture 11: Externalism, Ernest Sosa, Linda Trinkaus Zagzebski
9 Nov 2017
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They depend on the fact that the truth of the believed proposition is never completely assured by the conditioned that make the belief state justified. [n]o account of knowledge as true belief plus something else can withstand gettier objections as long as there is a small degree of independence between truth and other conditions of knowledge (zagzebski, 72) Gettier cases also pose a problem for externalist theories like reliabilism. She suggested a virtue theory where a subject"s intellectual virtues assure the truth of the proposition as well as justify the subject"s belief state. Expands on aaa-structure of knowledge that ernest sosa proposes and adds adeptness, whereby an agent"s skill is needed to get at knowledge. Aaa-structure: (1) accuracy, (2) adroitness and (3) aptness: performance achieves its aim, performance manifests competence, performance is accurate because it is adroit. Turri"s additions: performance is adept just in case it manifests the agent"s competence.
