I'm reading a book and came across this paragraph that resonates with me. "Forgive the repetition, but it's here for a reason. A lifetime of brainwashing has taught us that work is about measurable results, that failure is fatal, and that we should be sure that the recipe is proven before we begin" experiment with new knowledge is repetition, and we a fail often to find measurable understanding. Then we can trust our own judgement. The Book is the practice by Seth Godin.