This is what economic progress is all about. As our farms and factories grew more efficient, they accounted for a shrinking share of our economy. And the more productive agriculture and manufacturing became, the fewer people they employed. At the same time, this shift generated more work in the service sector. Yet before we could get ourselves a job in this new world of consultants, accountants, programmers, advisors, brokers, and lawyers, we first had to earn the proper credentials. This development has generated immense wealth. Ironically, however, it has also created a system in which an
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