It would be hard to imagine a better guide to this difficult subjectScientific AmericanIn Three Roads to Quantum Gravity, Lee Smolin provides an accessible overview of the attempts to build a final theory of everything He explains in simple terms what scientists are talking about when they say the world is made from exotic entities such as loops, strings, and black holes and tells the fascinating stories behind these discoveries the rivalries, epiphanies, and intrigues he witnessed firsthand Provocative, original, and unsettling New York Review of Books An excellent writer, a creative thinker Nature


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