Philosophy
The Epistemology of Memory and the Justification of Recalled Beliefs
Quick fact
Philosophical preservationism holds that memory does not generate new justification but merely preserves the justification a belief had when it was first formed, even if you can no longer recall the original evidence.
Why this is interesting
You trust your memories every day, but what if the reasons you originally had for a belief are long forgotten—can that belief still be justified?