When you write science fiction and you are someone like Paul Levinson, Isaac Asimov, or Arthur C. Clarke, then sketching a trajectory for your novels involves throwing away what is garbage to leave you with those events and their flow towards an objective in a realistic sense due to one: these authors have a good command of history, Two: they are realistic. Three: they understand science and how it impacts the world because of their understanding of politics. A prime example of this is Levinson's "Borrowed Tides". What one is left with is a realistic trajectory for human progress. In this work, I approach their schemes both mathematically and with computer programs that I wrote, to search for that reality upon which humanity may be converging.