These guys better watch out because they may also wind up validating astrology with their research.:-D
http://www.wired.com/wiredenterprise/2013/04/cliodynamics-peter-turchin/all/ They're looking into recurring cycles. These happen to coincide with recurring orbits of the planets. Told ya ancient astrologers were using the planets as time keepers and not as puppet masters. They did this just as they did with cycles of the sun and moon. Using planets was just as inevitable. For instance they're noticing a 50 year cycle of violence in the US. That's approximately 4 Jupiter cycles.