Intrinsic and Extrinsic Evidence in Set Theory

This paper discusses intrinsic and extrinsic justificationExtrinsic justification and evidence in Maddy’s work. I agree that extrinsic justificationExtrinsic justification is at present more important than intrinsic justificationIntrinsic justification, but I am more optimistic than she is about intrinsic evidence in set-theory. The main source of our disagreement is our view about the concept of setConcept of set, which I explain in this paper.