Grasp: The Science Transforming How We Learn is a book about how education systems are set up to nurture and cull students. It discusses the importance of college degrees, the history of IQ tests, and the importance of spacing, curiosity, and forgetting in learning. It also discusses the theories of Jean Piaget and Seymour Papert, and the debate between inside-out and outside-in learning. It suggests that knowledge should be acquired through discovery and construction, and that metacognitive biases should be taken into account. Finally, it suggests that mastery learning and felt difficulty should be used to help students learn.