Using computers to beat masses of the general public at horseracing in this fashion has been going on for well over 30 years. I first read articles about the ga

Using computers to beat masses of the general public at horseracing in this fashion has been going on for well over 30 years. I first read articles about the gambling teams and data scientists behind them in Hong Kong in the mid 90's. The teams had data capture people entering realtime odds from the tracks at Sha Tin and Happy Valley and hired private tellers to enter thousands of computed bets moments before a race began from their offtrack locations in downtown HK highrises. The thing that makes it easy to simulate but impractical to execute is that getting enough bets in fast enough and late enough to tip the odds to your favor to give you an edge while limiting losses is difficult to do. It's even harder to do without this wagering itself affecting the odds. For one there often just isn't enough money wagered on a race. In the heyday of the HK races you'd often have 100 million+ HKD wagered on every single race, much of that coming from the general population -- individuals going to the track. There are only a few big event races in the US or Europe that will attract that kind of betting pool. Even HK is no longer like that.