Critical thinking is precise but not always entirely clear. It’s slow and opaque. It’s stopping and starting and retreating and pushing forward again. It’s inquiry and it’s trying to understand and it’s humility. It’s re-wording thoughts and refining theories and it’s improving questions and it’s returning to old questions and looking at our underlying assumptions and seeing which are true and which are not and who gets to decide these truths. (Terry Heick, Can We Teach Critical Thinking In Schools?)