something looks good or not okay and that network is basically going to tell us if the image that we generated if it looks real that is does it can you distinguish that image from a set of real images and if their answer is no that means that we are doing well okay and this is the idea behind this giant material models in Goodfellow and colleagues that that has kind of really energized this whole field of image synthesis let's think about it you know what is it actually doing quickly so we have our function that