Minos allowed George and Hannah to place their bets first, and the two of them soon chose the events they wanted to bet on and what they thought would happen.
This type of betting was both good to be right but also impossible to predict the possible scenarios. In other words, if you bet on a particularly strong competitor, it was very likely that they would perform certain feats during their events. But maybe the competitor's strategy would be different from what the bettor wanted, or maybe a dark horse would show up in the middle of the event.
So, while it was logical and even likely that certain things would happen, it was also impossible to say what exactly would happen.
The slightest wrong move could lead to a completely unpredictable outcome by the bettors and ruin the bets of many, if not all, of the experts.