The Quantum Physics of Free Will
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http://www.scientificamerican.com/article.cfm?id=quantum-physics-free-will
> 1. Quantum mechanics is indeterministic, in that the outcomes of measurements are chosen at random from the slate of possibilities. So, if quantum effects help to shape our conscious choices, they sever the connection between us and the initial conditions of the universe.
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> 2. When we conduct experiments on quantum particles, we exercise our free will—for example, we make choices about what precisely to ask of the particles. Or at least we think we exercise our free will. How those particles respond can depend on whether we really do.
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> 3. If you could predict someone’s decisions consistently, you could conclude that he or she lacks free will. To do that, you’d need to take a full brain scan and simulate his or her thought processes. Yet quantum physics forbids the reliable, nondestructive copying of particles, let alone whole brains. If you could never observe the loss of free will, then you should doubt whether it is ever really lost.
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> 4. Quantum physics is time-symmetric, so we are as justified in saying that our choices set the cosmic initial conditions as the other way round.
See:
http://www.scientificamerican.com/article.cfm?id=quantum-physics-free-will