an easier time step by step as it updates itself in very small incremental steps it has an easier time actually going for the good representation then it has to see this solution right here and converge to that but yeah it seems delicate so what are they doing they are taking that idea of taking an input image right here and so by the way why is it important that there are no negative samples because now the question is always or where do you get these negative samples from right should they be uniformly sampled