see that all these different costs increase as we move from left to right and so our decrease as we move from left to right essentially that's saying that if you make the discriminator think that the samples that the generator created are real then you incur a very low cost we can see the way that they saturate in places and all so we can see how sampling along these curves that give us very different variance in the estimate of the gradient the green curve that lies the highest is the heuristic Allah motivated cost which is designed not to