 The millstone falling off its frame represents the passing of one age's pole star (symbolized by a ruler or king of some sort), and its restoration and the overthrow of the old king of authority and the empowering of the new one the establishment of a new order of the age (a new star moving into the position of pole star).The authors attempt to demonstrate the prevalence of influence of this hypothetical civilization's ideas by analysing the world's mythology (with an eye especially to all "mill myths") using 
Santillana and Dechend state in their introduction to "Hamlet's Mill" that they are well aware of modern interpretations of myth and folklore but find them shallow and lacking insight