So far, I've only used Personal Genius and Memory Supercharger. I haven't seen that much of an increase in my abilities, but I'm not expecting to at the moment, having only had them for a few weeks.
As for your second question, perhaps Paul Scheele can answer that one for you! But think of it this way - Paul Scheele puts forward some pretty radical ideas in his books and courses by conventional education standards, but then so did Albert Einstein when he proposed the Relativity theories.
