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The guy needs his head examined by a physiologist.

I'm sensing a certain disciplinary confusion here, but since Feynman is dead as a doornail, I don't think anybody will be examining his head any time soon, unless he left his brain to science.

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A linguist could, deconstruct his choice of language and with some measure of accuracy predict what may be said on most subjects, given his success, ego, and lack of tools to do someone else's job on a professional scientific level.

I recommend Linguistics 101, if that's really the kind of thing you think linguists do.