Some epistemologists hold that there can be beliefs that can be justified non-inferentially. I suppose Plato's regress of reasons has done a good amount of damage to epistemology (while also advancing the field).
Consider the following argument:
1. If P is a justified true belief, then P must be justified by some proposition Q.
2. If Q is a justified true belief, then Q must be justified by some proposition S.
. . .ad infinitum.
Since not every proposition can be justified true belief (JTB), I think it's safe to say that we should abandon JTB's altogether. However, does this refutation work against the notion that there could be reasons for accepting non inferential true beliefs that we have some to adopt? I'm not so certain. It seems that some epistemologists would accept things like fact infinitism, which is the thesis that (1) there are no self-justifying beliefs, and that (2) there are no foundational reasons. Which is to say that there is no doxastic justification, which proclaims the chain of reasoning or inference can lead to a belief that isn't itself justified.
All of this brings me to the point of circular justification in epistemology, while I don't have much hope for Western Epistemology, I don't say this out of contempt, but it seems to be the end-game for the field. Where should we go from here? And, what kind of validity do circular sources of justification/epistemic circularity (P justifies itself) have?