A paradigm is a mental model about how things are or how they work. Until recently (in historical terms), almost all humans held a mental model in which the Earth was the center of the cosmos and around it the sun and stars moved in their orbits. Copernicus suggested that this was a false paradigm, an inaccurate model of how things actually are.People initially scoffed at the suggestion. They could not visualize a model in which a spinning Earth moved around the sun. Theologians, long [...]
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