ABSTRACT
Authors frequently write in their prefaces that there will inevitably be errors in the body of the book – I have done so myself in the preface to this book. If what they write is true, there will be at least one false statement in the book; otherwise the prefatorial claim is false. Either way they are committed to a falsehood, and must be guilty of inconsistency. Yet the claim in the preface seems a perfectly reasonable one to make.
