In today's Academic Minute -- the feature's 500th edition -- the University of Texas at Austin's Art Markman explores why we think round numbers are such a big deal. Markman is a professor in the psychology department and director of the Similarity and Cognition Lab at the University of Texas at Austin, and author of Smart Thinking: Three Essential Keys to Solve Problems, Innovate, and Get Things Done. Find out more about him here. A transcript of this podcast can be found here.