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Fact opinion / facts / interpretation / Hume / Poundstone: directly, without interpretation - e.g. a mind would collect all the black raven, but can draw no conclusion from it - E.g. someone would not find any non-green Centaurs and conclude: the phrase "all centaurs are green" is true.
I W. Poundstone Im Labyrinth des Denkens, Reinbek 1995