Predicting by cycles

This seems quite interesting , based on cycles major wars seem to happen in the first two decades of a new century. Do we have free will to save ourselves, some people seem to, but the general crowd it would seem are grabbed by a group psychology, which manifests with precursors, like massive rise in preparedness with regards to aero space spending. This guy has worked out historical cycles and maintains he will adhere to them because they have up until now proved themselves to be right. Maintaining that the group psychological mood is the driving force, which like any living thing is subject to repeating rhythms.

The biggest problem with humanity as a whole is a lack of knowing and understanding history. I think we as a species are doomed to just keep doing the same things over and over again until we finally understands that doing the "same things" only lead to the "same results."