by Lee Smolin.
Theoretical physics has a problem. The Standard Model of particle physics hasn't greatly advanced since the late 80's yet it has important gaps.
These gaps should be filled with new models of particle physics. The leading contender to supersede the Standard Model is String Theory. Yet, in String Theory's 35 years of existence it has not made any interesting predictions. String Theory has also had some big misses-- failing to predict dark energy for example.
Other contending models, such as Loop Quantum Gravity, haven't faired much better.
This book digs into the why's and the what's behind this problem.
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