I have seen it demonstrated before a live audience of over a thousand people. It was not Hawkins himself, but they were using the method based on Power vs Force. They asked for a volunteer and then did a number of different muscle tests. The whole experience was quite astonishing, enough to make me go hmmmmmm? After reading the books and listening to a number of audio calls I have decided to join a local study group which meets in a few weeks. I am really looking forward to the experience, though I don't know exactly what to expect.
I don't have the interest in or intention to try to "prove" Hawkins theories to anyone. That concept of proving something to be right or wrong comes from the dualistic paradigm that I personally no longer find to be effective in my life. If his work does not resonate with you that is totally cool. You can find plenty of information out there to support your thinking. If his work does resonate with you that is totally cool too. Play around with it in your life with the intention to seek Truth and see what happens. Neither perspective is right or wrong and whatever you believe is perfect for you.
I must admit that I do really enjoy the opportunity presented in this thread to practice not getting pulled into dualistic thinking. Non-linear, non-dualistic thinking is a new paradigm for me so this has been great!
I am beginning to recognize both dualistic thinking and the impact that it has by engaging my ego - not the experience I want to have anymore. I still get pulled into it, but my awareness has put me in a much more powerful place. I feel so much more peace and happiness in my life and I know it is just going to get better and better!