How real are the equations with which we represent nature?
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Physicists’ theories work. They predict the arc of planets and the flutter of electrons, and they have spawned smartphones, H-bombs and—well, what more do we need? But scientists, and especially physicists, aren’t just seeking practical advances. They’re after Truth. They want to believe that their theories are correct—exclusively correct—representations of nature. Physicists share this craving with religious folk, who need to believe that their path to salvation is the One True Path.
But can you call a theory true if no one understands it?
https://www.scientificamerican.com/article/is-the-schroedinger-equation-true1/
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