Rating: 
Summary: Great read, but short on specifics
Review: Well first it bears noting that this book, clocking in at just over 200 pages, reads quickly and smoothly. And it is an engaging subject.But here is my main problem. The author glossess over most of the mathematics that explain Einstein's field equation. He gives the reader the definition of a tensor, but doesn't really show him what Einstein's tensors looked like, thus the gravitational field equation lacks full meaning as presented by the author. The way I see it, this book is only fully comprehensible (meaning one can fully understand the dynamics of Einstein's general field equation) if one knows all the math behind it. Since Aczel did not include this math, he must assume that 1) The readers already know it (in which case, they probably don't need to read this book) or 2) The readers wouldn't be able to understand it. Since we must assume the latter to be the case, the book falls far short of imparting the understanding about the nature of the universe it intends to. I would have gladly read another 150 pgs just to see the math worked out. Still, the concepts are fascinating and the explanations are clear. Reccomended.
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