Maybe it can't be visualized (but I doubt it-I'm sure it can), but I don't think it must be. The goal of Brett's arguments is how to teach students to learn pro

Maybe it can't be visualized (but I doubt it-I'm sure it can), but I don't think it must be. The goal of Brett's arguments is how to teach students to learn programming, not making every programming problem ever visual. Once a person learns how to think about programming problems, they become better at creating their own mental models and visualizations. And maybe someday they'll figure out how to create visualizations of these complex things you and I can't yet :)