Have you ever thought you knew something, then tried to explain it to someone else and realized you didn’t? Researchers call this the illusion of explanatory depth: We humans think we understand the world better than we really do. This is a problem. “When you teach something to someone else, that’s when you really learn it,” said Arthur Markman, Ph.D. “Because you discover all the pieces you didn’t understand.”
Markman, a psychology professor at the University of Texas and the executive editor of Cognitive Science, spoke at the Learning & the Brain Conference yesterday in New York. He argues that acquiring real knowledge—a true understanding of how something works—and being able to communicate that knowledge are among the most important skills a student can have.