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I've read one or two contradictory things about this. I was debating with a bloke recently who intensely disliked the Pauli principle, he seemed to think that something so important to the structure and stability of matter was somehow unsatisfactory if left as an ad hoc postulate. I was under the impression that spin statistics is not a postulate and was in fact derived from the relativistic version of QM. Unfortunately I won't be doing any relativistic QM, so I wonder if anyone here could tell me. Is there an explanation for spin statistics that makes sense, or is the only option the wade through the proof? (Or is it in fact a postulate?)

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# Is the spin statistics theorem a postulate?

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