Bounty and Spread

Definition

The book's central economic thesis splits the effects of digital progress into two separate, simultaneous phenomena that are easy to conflate. Bounty is "the increase in volume, variety, and quality and the decrease in cost" of goods and services that technology delivers — "the best economic news in the world today." Spread is "ever-bigger differences among people in economic success — in wealth, income, mobility, and other important measures." The book insists both are real and both are consequences of the same underlying cause, so debates that treat rising abundance and rising inequality as contradictory evidence are asking the wrong question.

In the Book

Part two of the book (chapters 7–11) is structured explicitly around this split. Chapter 9 opens with median income — "the income of the person at the middle" — and a thought experiment where a room of workers earning $30,000 sees its average income jump the moment a very high earner walks in, without any of the original workers being better off; median income and average (mean) income diverge as spread increases, so GDP and other average-based measures can rise even as most people's fortunes stagnate. Chapter 8 makes the reverse point about bounty: some of technology's biggest gains (free encyclopedias, free navigation apps, free communication) are invisible to GDP because GDP only counts what has a price, so official statistics can understate how much better off people are. The book traces photography's shift from analog to digital as an emblem of bounty — near- zero marginal cost enables an explosion of volume and variety — while chapters 9–11 trace how the same forces (digitization removing capacity constraints, marginal costs falling toward zero) simultaneously drive the spread documented through winner-take-all markets.

Why It Matters

Separating bounty from spread prevents a common analytical error: using aggregate abundance to dismiss distributional concern, or using distributional concern to dismiss aggregate progress. The pairing generalizes to any technology, policy, or institutional change that lowers costs or removes a constraint — it is worth asking, separately, "how much total value does this create" and "how is that value going to be divided," because a mechanism that increases the first can simultaneously widen the second.