Time may be fuzzy. If so, the idea of causality may be in trouble
THE thing about Gedankenexperimente — or thought experiments, for those who find Albert Einstein's native tongue too twisting—is that you never know where they might lead. For Einstein, they led to the theory of relativity. For James Clerk Maxwell, they conjured an imaginary demon who could violate the second law of thermodynamics. For Erwin Schrödinger, they created an existentially confused cat that was simultaneously dead and alive.