One of the ideas I had discussed in The Poverty of Historicism was the influence of a prediction upon the event predicted. I had called this the "Oed… - Karl Popper

What I criticize under the name Utopian engineering recommends the reconstruction of society as a whole, i.e. very sweeping changes whose practical consequences are hard to calculate, owing to our limited experiences. It claims to plan rationally for the whole of society, although we do not possess anything like the factual knowledge which would be necessary to make good such an ambitious claim.

The fascist appeal to ‘human nature’ is to our passions, to our collectivist mystical needs, to ‘man the unknown’. Adopting Hegel’s words just quoted, this appeal may be called the cunning of the revolt against reason. But the height of this cunning is reached by Hegel in this boldest dialectical twist of his. While paying lip-service to rationalism, while talking more loudly about ‘reason’ than any man before or after him, he ends up in irrationalism; in an apotheosis not only of passion, but of brutal force: ‘It is’, Hegel writes, ‘the absolute interest of Reason that this Moral Whole’ (i.e. the State) ‘should exist; and herein lies the justification and merit of heroes, the founders of States — however cruel they may have been … Such men may treat other great and even sacred interests inconsiderately … But so mighty a form must trample down many an innocent flower; it must crush to pieces many an object on its path.

By 'arguing...' I mean... criticizing... inviting... criticism; and trying to learn from it.