Thanks, Rawn, for the explanation. Very helpful, and worth reflecting on at some length to fully digest it. I did a Google search on "Od" and it was completely useless. Then I tried "Od Bardon" and found a useful historical article. The concept was proposed by a _non-occultist_ natural scientist, Dr. Karl Freiherr von Reichenbach, who made substantial contributions to the petrochemical, steel, and pharmaceutical industries. He was a very wealthy man who lived in the mid-nineteenth century. Today, he would probably be considered a chemical engineer. The history lesson, for those who might be interested, is here: http://www.geocities.com/franzbardon/theod.html The main website, however, is authored by a fellow named Paul Allen (not the one at Micro$oft) who seems to have just a bit of an axe to grind about Bardon's imperfections. Some of that creeps into the article referenced above, so be prepared. Warm regards, Pax Felix