This eye does not exist

Since I had zero experience with generative adversarial networks, I thought I should document some problems I had to overcome. Quoting Wikipedia: "A generative adversarial network (GAN) is a class of machine learning systems. This technique can generate photographs that look at least superficially authentic to human observers, having many realistic characteristics. It is a form of unsupervised learning." I'm not doing any introduction about how a GAN works since there are a lot of materials online with far better insights than the ones I could give.