this histogram looks and we're going to explore what they do so it's essentially it's pretty easy they compute the linear map around each data point so what is that if you imagine a neural network as a nonlinear function which I guess you should because it is so let's imagine it as like a nonlinear function from X to Y what they'll do is simply they'll look at a given date training data point which could be here right this could be the X and this could be the the Y and in fact let's look at it in lost landscape not even in Y but