Harrys. I hate to break it to you. Napoleon Hills had a long history of forgery before he came out and published The Law of Success & Think and Grow Rich. Again, he or any of the LOA endorsers are not reliable experts. Hill wasn't a scientist. Thus his researches don't hold any weight. There is a term for these experiments and their findings. It's called pseudo-science.
However, I get your point. It's irresponsible of me to publish something like that without documenting the rise of LOA and the experts behind it. Of course, here, my objective was to expose their business model. So the focus of this particular story didn't allow me much room there. But I heard you. Give a few weeks. I will publish another article documenting how LOA came to be. Don't worry. It will be supported by extensive research and hard facts.