"We need Productive Failure. Global studies prove that Productive Failure is up to three times more effective than a year of direct instruction from an outstanding teacher. If all classes were taught using Productive Failure, a person could gain enough time to be the equivalent of skipping two years of school. When compared side by side with Direct Instruction models, Productive Failure students have invariably demonstrated significantly deeper conceptual understanding as well as a greater ability to transfer what was learned to novel problems than students who had received direct instruction. If not designed for failure in the initial stages, learning tends to be shallow and inflexible. But with Productive Failure, learning is deep, flexible, and adaptive"--