Normal science often suppresses fundamental novelties because they are necessarily subversive of its basic commitments. The Structure of Scientific Revolutions (1962)
In science, as in the playing card experiment, novelty emerges only with difficulty, manifested by resistance, against a background provided by expectation. The Structure of Scientific Revolutions (1962)
If a demarcation criterion exists (we must not, I think, seek a sharp or decisive one), it may lie just in that part of science which Sir Karl ignores.