“One of the reasons for its success is is that science has a built-in, error correcting machinery at its very heart. Some may consider this an overbroad characterization, but to me every time we exercise self-criticism, every time we test against the outside world, we are doing science. When we are self-indulgent and uncritical, when we confuse hopes and facts, we slide into pseudoscience and superstition.”
Carl Sagan, The Demon-Haunted World: Science as a Candle in the Dark, p. 27
Preindustrial Craftsmanship 