On 18th November 2022, from 4pm to 5:30pm, I will deliver the New Enlightenment Lecture at the University of Edinburgh. New Enlightenment Lectures are held annually, and feature a prominent woman philosopher leading a roundtable discussion with postgraduate students and faculty members on gender issues in Philosophy, and delivering a keynote lecture on a topic of her choice. I am honoured I was invited to give a talk! Here are the poster of the event and the abstract of my talk. Epistemic Criteria of Delusionality Both in the popular press and in cognitive science research, there is a tendency not only to compare beliefs in conspiracy theories with clinical delusions, but to call ‘delusions’ various nonclinical beliefs that are found epistemically problematic, including conspiracy beliefs. One recent proposal by Sam Wilkinson is that when an interpreter calls a speaker’s belief delusional, the interpreter expresses their folk-epistemic disapproval towards the belief. Being an expressio...