The second part, consisting of chapters 7 through 11, explores bounty and spread, the two economic consequences of this progress. Bounty is the increase in volume, variety, and quality and the decrease in cost of the many offerings brought on by modern technological progress. It’s the best economic news in the world today. Spread, however, is not so great; it’s ever-bigger differences among people in economic success—in wealth, income, mobility, and other important measures. Spread has been increasing in recent years. This is a troubling development for many reasons, and one that will
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