I think that these kind of things are fun to play around with, and maybe some of them could show our future based on the path we are currently heading down, but nothing is set in stone. There are so many forks in the road, that we could easily stray from one path to another, and the string of events that follow would be different from that of which we were "foretold".
Ultimately, I don't really that these things really work. I think most professionals are just frauds trying to make money (maybe one or two who honestly believe that they can see into the future).