The way to meet our demographic challenge is to keep people in the labor force longer, Mr. Shultz says, and not fall for European notions that there is some fixed amount of work to be divided up.

WSJ: The Weekend Interview with George Shultz: Memo to Romney��Expand the Pie

Few thought to reject the Hubbard paradigm, even though it relied heavily on neo-Malthusian notions of a world of static technology and a known, fixed supply.

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