Book review: The Theory of Everything, part 3

Alex jumps into the third and final part of his summary and review of Stephen Hawking's 'The Theory of Everything’. Lecture 6 covers the concept of time using thermodynamic, psychological, and cosmological arrows. Lecture 7 explores the search for a unified theory and its philosophical impacts (we promise no more big words). Cover image: NASA/JPL-Caltech/University of Wisconsin, Public domain, via Wikimedia Commons