In a 1994 television interview with ↑Alexander Kluge, ↑Niklas Luhmann warned: “Vorsicht vor zu raschem Verstehen!” [Attention if something is understood too quickly.] 70 years earlier, Hercule Poirot said: “If a thing is clear as daylight—eh bien, mistrust it! Someone has made it so.”—from Agatha Christie’s “The Disappearance of Mr Davenheim” (1924).