It's one thing to say that social structures show evidence of cyclic behavior. It's another thing entirely to say that it's an accepted fact that every democratic society will inevitably fall to anarchy and be reborn as a monarchy.
I mean history is pretty replete with examples...more than enough books have been written on this.
Note that the Anarchic period is usually very short and often accompanied by war because people can't figure out how to live without a ruler apparently.
