Once Carter saw Richard’s enthusiasm, he, too, opened what Bob Glass had sent and started playing around with it. The math he understood. The thinking was clear and simple. All the rules the guy and his daughter had used to describe the social lives of kids and grown-ups felt plausible. Ditto the rules governing the spread of the disease. The only problem was that the model’s output was just a bunch of numbers listed in these mind-numbingly long tables. “Most people can’t read tables,” said Carter. “They need to see it graphically.” Carter turned the numbers into a graph. The picture shocked
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