That was a very interesting read.
If you want to take a more open-minded approach, you should also try reading one of Graham's books. One of his very best is 'Underworld', and of course, 'Fingerprints' is a real eye-opener, however, Graham has refined his conclusions a little bit since then. But together, I think you will find some of the answers you are searching for. Not to mention, in fifty years or so, many of Graham's theories will be mainstream, so why wait?