In this Master Class, Professor Linde remarks on the challenges in proving the inflationary multiverse. If an infinite number of different universes can be produced, each with different laws of physics, it seems impossible to design an experiment that could falsify the theory. In a given era, is it acceptable to say a theory is wrong if we cannot conceive of a way to prove or disprove it? Should a theorist simply follow their intuitions when no measurable data might be forthcoming?
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