A quick, math-free survey of the history of quantum mechanics and what QM implies about the structure of reality. Anyone who has had high-school physics should find it an easy read. Topics ♦ how quantum mechanics emerged from classical physics♦ Heisenberg and his Uncertainty Principle♦ early interpretations of Schrödinger’s equations♦ the two-slit experiment♦ Einstein’s rebellion against the Copenhagen Interpretation♦ the original purpose of the “Schrödinger’s cat” thought-experiment♦ the deep problems of the Copenhagen Interpretation♦ the rise of Hugh Everett’s Relative-State (“Many Worlds”) Interpretation♦ decoherence theory♦ quantum encryption and quantum computing♦ some unsettling implications of the Many Worlds Interpretation
(This is a revised/updated version of Everything and an Introduction to Quantum Probability, published in 2012. )