There was an illustrated book floating around in pdf form a few years ago, but now I can't find it. It describes the history of the next several billion years of history in our galaxy. In an act of revenge, the most powerful branch of Homo sapiens decides to bioengineer all other intelligent species, including all descendants of humans. The bulk of the book is a taxonomy of the results. Some lineages lose the capacity for self-awareness. Others are reduced to flat, square laminae without hands or locomotion, but retain their self-awareness, the better to appreciate their condition.