Most helpful critical review
60 of 68 people found the following review helpful
on November 26, 2010
This book was a big disappointment. The style is really hard to plod through; every sentence reminds you that English isn't Bojowald's native language. The book starts by covering a lot of preliminaries about quantum mechanics and general relativity, and it doesn't do that very well. This first half of the book is in particularly in need of some diagrams. E.g., there is a description of the Bohr model of the atom in words, with no diagram of the circular orbits. Rather than useful scientific diagrams, most of the illustrations in the book are photos of abstract sculptures. Once he gets into the quantum gravity stuff, there are some descriptions of contact with observation, but these are already out of date. He discusses tests of dispersion of the vacuum, which the LQG community has already disowned as a prediction of the theory. He also devotes some space to Smolin's cosmological natural selection, which has recently been falsified by the observation of a high-mass neutron star. Amazingly for a book about LQG, there are absolutely no drawings of spin networks.