I don't think it is fair to say it is not possible. There is an AI system out there that has correctly predicted the superfecta for the Kentucky Derby based soley on user predictions.
I work for a company that bets on the horses, and yet they use broadly similar techniques. But this doesn't replace humans at all.
Also as an aside, correctly predicting a superfecta happens quite a lot, and it is hard to tell from sample size of 1 if this was luck, skill or a combination of both. Probably a combination of both - their algo may have reduced the odds to 200-1 for example, and luck did the rest.
UNU is not AI, it's polling. Bridgewater would like to develop an AI that minimizes human input, not just a better method of combining different human opinions.
http://www.newsweek.com/artificial-intelligence-turns-20-110...