We are joined for this episode by a very special guest, philosopher Arthur Witherall. Arthur has published a book and a number of papers on the fundamental question of why the universe exists and he chats with us about some of the metaphysical and philosophical explanations for why there is something, rather than nothing (a most irksome question, we hope you agree?). This includes a brief discussion of David Pearce's 'Zero Ontology'. You can purchase Arthur’s book ‘The Problem of Existence’ on Amazon.