Fashion, Faith, and Fantasy in the New Physics of the Universe. By Roger Penrose. Princeton, NJ: Princeton University Press, 2016. 520 pages. US $29.95 [Book Review]

Zygon 52 (3):905-913 (2017)
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Abstract

In his latest book,Roger Penrose deals with three foundational problems of current physics fromhis particularly fresh perspective.He criticizes mainstream string the- ories, standard interpretations of quantum mechanics, and pre-Big Bang cosmolo- gies inasmuch as they aim to solve profound questions while glossing over equally deep issues in our understanding of nature. In this review, I analyze Penrose’s main arguments, emphasizing his presentation of the Second Law conundrum as “the most profound mystery of cosmology”, and discuss his own proposals to overcome the impasse. I especially focus on the capabilities of conformal cyclic cosmology to illuminate the enigma of the extraordinarily low entropy at the Big Bang and review its capacity of success in stipulating a reset for the entropy of the universe. Even though one need not follow Penrose’s tentative answers, which are not immune to serious critiques, much of his view can be shared as a sound starting point in search of “the new physics of the universe.”

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Javier Sánchez Cañizares
Universidad de Navarra

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