  Especially in early 20th century philosophy, a popular means of dismissing various philosophical theses (say in metaphysics) was “on the grounds that they are nonsense, nonsignificant, absurd, meaningless, unintelligible, or logically odd” (Goddard and Routley 1973, 1). Such rejections are characteristic of logical positivism, taking a cue from Wittgenstein’s accusation that much of philosophy is “not false, but senseless [unsinnig]” [Tractatus 4.003] and therefore easy to ignore. By the late 1960s, it seemed to Routley and Goddard that Russell and others had succeeded in promoting a “meaninglessness” solution to various paradoxes like the Liar sentence, or the Russell contradiction,