"As I look back on it, I think Ken made the right decision," says Eugenia Singer, who had originally been disappointed at Arrow's failure to include sociologists and psychologists in the group. "He had the most highly, technically trained economists he could get. And as a result, there was a credibility that was built. The physical scientists were amazed at their technical background. They were familiar with a lot of the technical concepts, even some of the physical models. So they were able to start using common terms and building a language they could talk to each other in. But if they had
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