The classic approach to Artificial Intelligence treats the human being as a cog in the computer's process -- the so-called “human-in-the-loop”.

By contrast, the classic approach to Human-Computer Interaction seeks to create a ‘user experience’ with the computer.

We seek a third approach, a true human-computer partnership that takes advantage of machine learning, but leaves the user in control. I describe how we can create interactive systems that are discoverable, appropriable and expressive, drawing from the principles of instrumental interaction and reciprocal co-adaptation. Our goal is to create robust interactive systems that grow with the user, with a focus on augmenting human capabilities.