Cycles of Time

Roger Penrose has a new theory on "one of the biggest puzzles of cosmology"--that of the universe's origins--but many of those who listen to this audiobook will have some trouble comprehending it. Many less scientific-minded listeners will want to go back and read over passages on concepts like entropy, and equations really don't mean much when someone's just reading them. Supplemental text, supplied as a PDF or print insert, includes figures referred to in the audio as well as the aforementioned equations. Penrose's ideas may be intriguing, but going back and forth the between the audiobook and the booklet is an awkward process. J.A.S. (c) AudioFile 2011, Portland, Maine