The Pi man: Armstrong's 8.6 year cycle

Michael Armstrong is an intriguing character, so intriguing in fact that he might as well been the inspiration of the movie Pi or the unfortunate hero of a fictional spy novel character. 

Myth or reality, the 8.6 years cycles described by his papers have gathered enough publicity over the years to take notice, especially if his global business cycle is once again calling for caution, at least until the beginning of next year.