Experimentation and scientific realism

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Scientific realism can never be proven nor refuted at the level of theorizing. The only grounds for scientific realism are experimental. The best evidence for the reality of a hypothetical entity is that it can be used in order to investigate other bits of nature. A detailed example is given, Namely a 1977 polarized electron gun used to show failure of parity conservation in weak neutral current interactions.

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  • Ian Hacking

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