<<If something is not A, then it must be something other than A, let us call that B. This rests on multiple logical flaws. First, why not C, or D, or E or .... Second, what if we are wrong about not A?>>
If the 'psychogenic premise' and van Holst references (not read, yet) are deducing
social types because no organic cause can be shown, which I suspect, then I demure from a similar response to the more rigorous analysis of my casual premise by the proffered formal logic.
I appreciate your pedagogy but I think it's too pedantic for a casual premise, based on
Historical observation that does not negate ALL other possibilities, though agreeably, singularly unprovable (for now). (I may be 'the blind man and you wear a white hat'... .)
IAE, I would rather be lucky than good... and connect the stress dots to C, D, and E. ,-)