Until it isn't. And when it isn't, that is precisely where the edge lives — in the gap between public sentiment and true probability.
Professional participants don't predict outcomes. They identify mispriced expectations and act with discipline across large sample sizes.
Bookmakers set prices based on public sentiment, liability management and volume — not purely on probability. Where their model is wrong, an informed participant with superior data holds a structural advantage.
Short-term results are noise. The investor's advantage emerges only across large sample sizes. A losing month with correct process is success. A winning month with incorrect process is a liability.
Even a 5% edge produces losing runs of 20, 30, or 50 bets. Without understanding variance, a sound strategy gets abandoned at exactly the wrong moment. Kelly Criterion exists for one reason: to keep you in the game.