Ubuntu is a free computer system, like Windows or macOS, but it’s built by a community. It’s great for programmers because it’s very flexible and has lots of tools already built-in that help you code.

And his students are using it, too. “It does feel hypocritical to tell them not to use it when I am using it,” he said. But he turns to A.I. to make sure they are using it in permitted ways.