«Тhe past does not repeat itself, but it rhymes,» Mark Twain once said, a reference to the patterns of history, perceived anecdotally. Today, a new field is coalescing around the notion that historical patterns are, to some degree, measurable, and that the future can, also to some degree, be predicted. Researchers involved in the field call it «cliodynamics» after Clio, the Greek muse of history… History as Science