After many false starts I’ve actually started to write my “treatise” on evolution, some of the pages I’ve been turning out being in note form (I want to get the ideas down and then fill in the exact details later when I can pick up the proper reference books from the shelf) while others resemble actual passages and are in a near-finished form. My work isn’t going to be a chronological overview of the history of life like many other books, but will instead take a more personal approach reflecting how I’ve come to understand evolution and how it proceeds. Differing rates of change, convergence, etc. are going to be the guideposts to the tour of life on earth, and