Richard Feynman (1918-1988) argues in his famous Lectures on Physics (1961/62) that finite accuracy of measurement also makes the future very unpredictable, because even very small errors in prediction have cascading effects that lead to vastly different outcomes. Thus, the difference between a classical interpretation (deterministic) and a quantum-mechanical explanation (indeterminisitc) is not as categorical […]

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In 1935 Schrodinger published an essay describing the conceptual problems in Quantum mechanics. A brief paragraph in this essay described the cat paradox: “One can even set up quite ridiculous cases. A cat is penned up in a steel chamber, along with the following diabolical device (which must be secured against direct interference by the […]

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Quantum nonlocality is a paradox that was described first by Einstein, Podolsky, and Rosen (EPR), who published the idea in 1935. The EPR paradox draws attention to a phenomenon predicted by quantum mechanics known as quantum entanglement, in which measurements on spatially separated quantum systems can instantaneously influence one another. As a result, quantum mechanics […]

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“Where did they [i.e., 10 to the power of 80 particles in the universe] all come from? The answer is that, in quantum theory, particles can be created out of energy in the form of particle/antiparticle pairs. But that just raises the question of where the energy came from. The answer is that the total energy of the universe is exactly zero.”

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