Everybody has false beliefs, including you. But that means everyone's beliefs are self-contradictory. If we wrote down everything you believe in a book, we'd have to include one more statement in the book's preface: "some of the statements in this book are false". In this Wireless Philosophy video, Jonathan Weisberg (University of Toronto) explains the infamous "Paradox of the Preface", and what it might teach us about belief, reason, and logic.
The Preface Paradox
University of Toronto