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11.22 Falsifiability

Philosopher of science Karl R. Popper set out the concept of falsifiability as a way to distinguish science and pseudoscience. Testable theories are scientific, but those that are untestable are not.

In what one sociologist derisively called “Popper-chopping,” opponents of evolution seized upon Popper’s definition to claim evolution was not a science, and claimed creationism was an equally valid metaphysical research program.