i used to read armstrong back in the 1990's. my interest diminished when he revealed the secret of his cycle theories: the basic cycles were 3141.5 days: i.e. everything was based on pi. i forget the "secret" of the sub-cycles, but it was similarly uninspiring.

this revelation put him - in my mind - in with the numerologists and astrologists [do you know there is/was someone publishing market analysis based on astrology?]