I don’t have much to say about this book. Deutsch writes of the Copenhagen Interpretation that “It’s disparagement of plain criticism and reason as being ‘classical’ and therefore illegitimate, has given endless comfort to those who want to defy reason and embrace any number of rational modes of thought. Thus quantum theory – the deepest discovery of the physical sciences – has acquired a reputation for endorsing every mystical and occult doctrine ever proposed.”

You’ll find many of those mystical and occult doctrines championed by the heroes of How the Hippies Saved Physics. Sure, quantum encryption is pretty cool, and it was because the “hippies” of the title got it so wrong that others got it right. In my mind, that’s not a ringing endorsement of their methods. I would have liked the author to point out that things like ESP, clairvoyance, and telekinesis actually don’t work. One would think, given null result after null result, that the physicists profiled in this book would have eventually gotten the idea. But many of them are still championing the same flapdoodle even today.

Quantum mechanics is amazing enough without having to add mysticism and nonexistent forces to it. Don’t waste your time with this book.

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