Send us Fan Mail Last year, 500 students on 100 teams competed in the Case Competition World Cup. Before they saw the case, coach Divya – 8 years at McKinsey – taught them the first move that separates winning teams from the rest. It's the day 1 answer: a hypothesis you lock in before you have the data, even though it feels premature. But skip it, and teams start boiling the ocean – expanding the question until there's no path left to a real recommendation. This fall, the competition returns ...