Quotes by Trial And Error Most species do their own evolving, making it up as they go along, which is the way Nature intended. Terry Pratchett evolution-of-man trial-and-error moral-fiber You show me a successful complex system, and I will show you a system that has evolved through trial and error. Tim Harford trial-and-error errors successful Sure, science involves trial and error. Scientists refine theories each day. But as they do, they help us grasp more clearly the wonders of the world and the universe. Tony Snow trial-and-error errors science Progress through trial and error depends not only on making trials, but on recognizing errors. Virginia Postrel trial-and-error progress errors We proceed by doubt, by trial and error, by resisting the impulse to lunge after certainty. William Deresiewicz trial-and-error errors doubt Most intuitive ideas have to be clarified, so there is a trial and error process. James Redfield most trial-and-error process ideas «12