While I have not finished the book yet, it is one of the best and clearest introductions on the conundrums of quantum mechanics I have ever read and I've read a few. The author's main thesis is that it is not so much quantum mechanics that is weird but us in our everyday habits of thought and adherence to certain traditional forms of mathematics such as being stuck on the idea that multiplication is necessarily commutative even though, as it turns out, three dimensional space is not. That is, x times y does not necessarily equal y times x. The order of multiplication makes a difference. The first result may be positive and the second one negative even though they may have the same numeric value. He illustrates this with a neat and simple exposition of Quarternions which were invented by Hamilton well over a 100 years ago and have only fairly recently gained some daily acceptance in, of all places, 3 dimensional computer graphics where the software engineers using them don't give a damn for political correctness. They want something that works the best way possible, never mind if it offends the entrenched mathematical habits and sensitivities of certain academic physicists, electrical engineers, and the ghost of Oliver Heaviside. There's lots more to the book that I haven't gotten to yet and which I'm looking forward to. Great fun. Highly recommended.