He was effective, in the same way that advertising campaigns are
effective. He was effective, in the way that movies are
produced. He's effective, in the way that Anthony Robbins sells
seminars, CDs and tapes. I bought a set of his tapes in the 90s.
Very useful stuff, his brand of NLP.
Hitler was a businessman and a marketing genius and a showman.
Hitler was Dark Side P.T Barnum... although whether PT Barnum
was Light Side is questionable as well