I have long wanted to see a completely straightforward, all-in-one-place explanation of these topics. It could start with the question: "Aren't we divided into

I have long wanted to see a completely straightforward, all-in-one-place explanation of these topics. It could start with the question: "Aren't we divided into men and women?" Then it would briefly describe the levels on which this duality is thought to occur: genetics, development, anatomy, sexuality, and psychology. Then it would describe the non-dual aspects of each level (XYY for genetics) and the way in which each level can "mis-match" with the others. On the 'bottom' levels like genetics and anatomy, most people are willing to believe the non-theoretical and purely evidence-based science about 'unusual' arrangements. Once these things have been established as perfectly understandable, it becomes easier to believe that someone might self-identify as a different gender than their genetics or anatomy indicates. Or that the psychological identities might not be strictly divided into male and female. Does something like this exist? The "but we're all men and women" argument is so common, and the knowledge about each individual way in which someone can differ from this norm is so scattered, it would be great to have it all in one place.