A study looked at a market simulation game in classrooms to see how students make strategic decisions in business competition. They played as managers and chose prices, quantities, and fixed costs to try to win. The results showed that mistakes in decision-making can have a big impact on outcomes, and adapting to opponents' strategies at the right time is crucial. The traditional theory of competition was challenged, with lower profits linked to higher uncertainty. The introduction of inventory carry-over changed the advantage from one type of competition to another over time. The study suggests that teaching economics should focus on optimizing multiple objectives rather than just one.