in this particular example the idea of the paper is that the feature function can be rich in in expressivity and you know tell you all sorts of things about your current state and the reward function is just a number right and then the the reward is specified by simply linearly mixing these features so the structure imposed by the paper here is that there are such a thing as a feature and any task can be described by mixing these same features okay that's that's the issue right here so the features are going to be constant