small problems with it that the discriminator could detect in this case we've shown a slightly grainy noisy image of a face suggesting that this brain and noise is a feature that the discriminator might use to detect the images faked we applied the discriminator function to the fake example that we pulled from the generator and in this case the discriminator tries to make its output D of G of Z be near zero earlier when we use the discriminator and real data we wanted D of X to be near one and now the discriminator wants D of G of Z to be