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## 2. The Two-Generation Model

If you’ve ever watched three people playing racquetball, you know how chaotic it is. Two-person racquetball is pretty straightforward: Person A hits the ball, then Person B, and then back and forth until someone scores. With three people, though, Person A is playing against Persons B and C—at least while serving. Then, when Person B serves, A and C team up, and later it’ll be A and B against C. As you might imagine, the games are generally longer than two-person racquetball games because it’s a little harder to score when you’re always facing two opponents. And if you were to come in during the middle of a point, it would be fairly difficult to figure out which player had served.

This leads to an interesting observation ...

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