The relationship between challenge and skill can be summarized by this groth, the so called experience fluctuation model. So how do we create flow in superhuman? Well, let's take these conditions one by one. Number one is knowing what to do next. Now we can make product decisions that make this dramatically easier for our users. Two, knowing how to do it. Early on in the history of the company, we saw that users would some times forget our keyboard short cuts. They knew what they wanted to do, but they did not know how to doIt. Just hit command k and then type in what you want to do. It will do it for you and teach you the short