They are pretty common. And they're a little tiny robot, a simple robot with some sensors, a little bit of processing actuation.

And you're seeing a lot of things passing through its minds, a lot of self models that try to explain the relationship between actuation and sensing. It then tries to do a second action that creates the most disagreement among predictions of these alternative models, like a scientist in a lab. Then it does that and tries to explain that, and prune out its self models.