I always get a similar response when I tell people about the paraliminal tapes or Photoreading, or whatever. People tend to be very sceptical. There are so many scams about these days that when something comes along that can help improve your life through non-conventional means, people automatically think that there is something dodgy about it. Unfortunately, people are not taught at a young age how to get the most out of their minds - a lot of the brain's ability is supressed in school. All Paul Scheele's courses are doing is helping to regain access to those abilities.
I don't know about concrete evidence, but considering the number of high-profile people, usually in the psychology field, who have spoken highly of the techniques, I'd say that there is at least some strong evidence to support it.
Why doesn't the whole world practice it? Again, it goes back to scepticism - education institutions would rather stick to what they know than employ some dodgy sounding "easy-learn" theories. People do not like change.
[This message has been edited by bujin (edited August 13, 2001).]