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Psychology/Freud/Wittgenstein: E.g. correlation between the position of the fetus, and our sleep. - Although this looks like a causal connection, it is not, because here we cannot perform a psychological experiment. - Freud's explanation does the same as an aesthetic explanation: it brings two factors together.
Psychology/joke/WittgensteinVsFreud: confusion between reason and cause. - Laughter has a reason - otherwise consent to the analysis would be no way to find out the cause. - Cause/physics: is not about consent - also causes of laughter can be detected, but not by consent, but by experiment - for aesthetic investigation also consent is needed.
Vorlesungen 1930-35 Frankfurt 1989
Das Blaue Buch - Eine Philosophische Betrachtung Frankfurt 1984
Tractatus Logico Philosophicus Frankfurt/M 1960