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Review

Carl Benedikt Frey's The Technology Trap is a masterful work of economic history that reframes the modern automation debate by embedding it in a sweeping narrative stretching from ancient Rome to the age of artificial intelligence. Frey, an Oxford economist best known for his 2013 paper estimating that 47 percent of American jobs are at high risk of automation, uses that finding not as a prediction of doom but as a springboard for a far more nuanced investigation: why do some episodes of technological change produce widespread prosperity while others produce social upheaval, political extremism, and the immiseration of working people?

The book's central analytical distinction is deceptively simple but enormously productive. Technologies, Frey argues, are either "enabling" (making workers more productive in existing tasks or creating entirely new ones) or "replacing" (rendering workers' existing skills redundant). The telescope enabled astronomers; the power loom replaced hand-loom weavers. This binary becomes the lens through which Frey reads centuries of economic history, and the results are illuminating. The reason preindustrial monarchs blocked labor-saving machinery was not ignorance but rational political calculation: the ruling classes had more to lose from angry displaced workers than they had to gain from productivity improvements. The reason Britain industrialized first was not primarily scientific genius but a shift in political power toward merchant manufacturers who stood to profit from mechanization, and a government willing to deploy twelve thousand troops against machine-breaking rioters.

The book's most compelling sections trace the parallel between Britain's Industrial Revolution and America's computer revolution. During what Frey calls "Engels's pause" (roughly 1780-1840), output surged while real wages stagnated, the profit share doubled, inequality skyrocketed, and ordinary people grew physically shorter from declining nutrition. The age of automation since the 1980s has produced strikingly similar patterns: productivity has grown eight times faster than hourly compensation, the labor share of income has fallen to postwar lows, and middle-income routine jobs have been hollowed out, forcing non-college-educated workers into low-paying service work or out of the labor force entirely. Frey marshals an impressive body of evidence connecting these economic dislocations to the unraveling of communities, rising "deaths of despair," and the populist backlash that delivered Trump's 2016 victory, arguing with statistical rigor that Michigan, Pennsylvania, and Wisconsin would have gone to Clinton had the number of industrial robots not increased since 2012.

What separates the two great periods of immiseration is a golden century of "enabling" technology that Frey calls "The Great Leveling." From the 1870s through the 1970s, electrification, mass production, and motorized transportation created an abundance of new, better-paying jobs that pulled workers upward rather than pushing them down. This was the era when a welder or a truck driver could support a family and enter the middle class. Frey argues persuasively that this exceptional period explains why twentieth-century labor rarely raged against machines: enabling technologies made workers' skills more valuable, and the social contract of the welfare state provided a safety net during transitions. The tragedy of the computer revolution is that it reversed this pattern, automating precisely the semiskilled machine-tending jobs that mechanization had created.

What makes the book genuinely valuable rather than merely alarming is its insistence that the long run cannot be disconnected from the short run. Yes, the Industrial Revolution eventually made everyone richer, but three generations of working Englishmen were made worse off in the process, and those who lost their livelihoods never lived to see the great enrichment. Frey is careful to note that he is neither fatalist nor Luddite; he explicitly argues against restricting automation. But he insists that if technology fails to lift all boats, broad acceptance of technological change cannot be taken for granted. People today have higher expectations than at the time of Engels's pause. They have the right to vote. And they are already demanding change.

The book is not without limitations. Its Western focus is acknowledged but still leaves much of the global story untold. The policy prescriptions in the final chapter, while sensible (expanded earned income tax credits, early childhood education, wage insurance, zoning reform), feel somewhat thin relative to the magnitude of the disruption described. And Frey's reliance on the enabling/replacing binary, while analytically powerful, occasionally flattens the complex ways in which a single technology can be both simultaneously. Nevertheless, The Technology Trap succeeds admirably in its primary ambition: to provide the historical perspective that our current automation debate so desperately lacks. It is the rare work of scholarship that is equally valuable for the policy maker, the technologist, and the citizen trying to understand why, in an age of extraordinary innovation, so many people feel that progress has left them behind.

Reviewed 2026-04-06

Notable Quotes

Future historians may wonder why we failed to learn from the past. Historically, when large swaths of the population have found their livelihoods threatened by machines, technological progress has brought fierce opposition. We are now living through another episode of labor-replacing progress, and resistance is seemingly looming.

Preface, opening lines setting up the book's central thesis about the cyclical nature of technology resistance. — technology resistance, historical patterns, automation anxiety

The idea underpinning this book is straightforward: attitudes toward technological progress are shaped by how people's incomes are affected by it.

Preface, Frey's thesis statement distinguishing enabling from replacing technologies. — core thesis, enabling vs replacing technology, political economy

The Luddites were right, but later generations can still be grateful that they did not have it their way.

Preface, Frey's paradoxical assessment of the Luddites: correct about their own suffering, but wrong about the long-term trajectory. — Luddites, Industrial Revolution, short run vs long run

Progress is not inevitable and for some it is not even desirable. Though it is often taken as a given, there is no fundamental reason why technological ingenuity should always be allowed to thrive.

Preface, challenging the assumption that technological progress is an unstoppable force. — technology trap, political economy, progress

Without technological change, 'capital accumulation would amount to piling wooden plows on top of wooden plows.'

Introduction, quoting Evsey Domar on why productivity is the engine of prosperity. — productivity, technological change, economic growth

The long-term economic benefits of the Industrial Revolution, to which Bill alluded, are uncontested. Before 1750, per capita income in the world doubled every 6,000 years; since then, it has doubled every 50 years.

Preface, establishing the magnitude of the Industrial Revolution's economic transformation. — Industrial Revolution, economic growth, living standards

If the adoption of machines makes labor productivity grow by 2.5 percent per year, output per person will double every twenty-eight years. The notion that the product of an hour of work can double in just about half of a working lifetime is surely sufficient justification for the disruptive force of technology.

Introduction, on the compounding power of productivity growth and why it justifies disruption. — productivity, economic growth, creative destruction

One reason economic growth was stagnant for millennia is that the world was caught in a technology trap, in which labor-replacing technology was consistently and vigorously resisted for fear of its destabilizing force.

Preface, introducing the concept of the 'technology trap' that gives the book its title. — technology trap, preindustrial stagnation, resistance to technology

In the period 1780-1840, output per worker grew by 46 percent. Real weekly wages, in contrast, rose by a mere 12 percent. Taking into consideration that average working hours increased by 20 percent in the period 1760-1830, it is hardly an exaggeration to suggest that hourly earnings declined in real terms for a sizable share of the population.

Chapter 5, documenting the divergence between productivity and wages during the Industrial Revolution. — Engels's pause, wage stagnation, inequality, Industrial Revolution

The constant aim and tendency of every improvement in machinery is to diminish the costs by substituting the industry of women and children for that of men.

Chapter 4, quoting Andrew Ure on how early factory machines were specifically designed to replace expensive adult labor with children. — mechanization, child labor, labor replacement, deskilling

If mechanization opened new vistas of comfort and prosperity for all men, it also destroyed the livelihood of some and left others to vegetate in the backwaters of the stream of progress. The victims of the Industrial Revolution numbered in the hundreds of thousands or even millions.

Introduction, quoting David Landes on the human cost of industrialization. — Industrial Revolution, worker displacement, human cost

In the limit we could devise an economy in which technology is designed by geniuses and operated by idiots.

Introduction, quoting economic historian Gavin Wright on the early Industrial Revolution's deskilling pattern, contrasted with the computer age where 'we seem to have devised an economy designed by geniuses to be operated by other geniuses.' — deskilling, skill-biased change, Industrial Revolution vs computer age

A common misconception is that automation is an extension of mechanization. Automation has replaced precisely the semiskilled machine-tending jobs that mechanization created, which once supported a large and stable middle class.

Introduction, on how the computer revolution reversed a century of mechanization that had created middle-class jobs. — automation, middle class decline, Great Reversal

In America, labor productivity has grown eight times faster than hourly compensation since 1979. Even as the American economy has become much more productive, real wages have been stagnant, and more people are out of work; consequently the labor share of income has fallen.

Chapter 9, documenting the modern 'return of Engels's pause' in the computer era. — wage stagnation, productivity-wage gap, Engels's pause, inequality

The first three-quarters of the twentieth century has rightly been regarded as producing 'the greatest levelling of all time.' It was a period of egalitarian capitalism when workers' wages rose at all ranks, to the point where Karl Marx's proletariat could join the middle class.

Chapter 9, describing the exceptional character of the 20th century before the computer revolution reversed it. — Great Leveling, middle class, egalitarian capitalism, 20th century

Whether we are freezing or cooking depends on where we happen to live. Focusing too closely on national statistics disregards the fact that if you put one hand in the freezer and the other on the stove, you should feel quite comfortable on average.

Introduction, on why national averages obscure the geographic concentration of automation's victims. — geographic inequality, local impacts, averages vs reality

Never again must the worker be replaced by a machine.

Introduction, quoting Alfred von Hodenberg, leader of the Nazi Labor Front in 1933, showing how authoritarian regimes historically exploited automation anxiety. — authoritarianism, automation anxiety, political exploitation

The automation had to be done, otherwise we would have lost the plant altogether. Some jobs have been lost for the moment, but we had to accept some changes to keep the factory here. We sure as hell didn't want those jobs to go somewhere else.

Chapter 11, quoting union leader Donald Bennett at General Electric on the impossible choice between automation and offshoring. — automation vs offshoring, globalization, union dilemma

If Amara's Law ceases to hold, it will likely be due to the return of Luddite sentiment.

Chapter 12, on the risk that political backlash could slow the adoption of AI technologies. — Amara's Law, political backlash, AI adoption, Luddism

We tend to overestimate the effect of a technology in the short run and underestimate the effect in the long run.

Chapter 12, quoting Roy Amara's famous law, which Frey argues applies to AI as it did to electricity, steam, and computers. — Amara's Law, technology adoption, productivity lag

There's never been a better time to be a worker with special skills or the right education, because these people can use technology to create and capture value. However, there's never been a worse time to be a worker with only 'ordinary' skills and abilities to offer, because computers, robots, and other digital technologies are acquiring these skills and abilities at an extraordinary rate.

Chapter 12, quoting Brynjolfsson and McAfee on the widening divide between skilled and unskilled workers. — skill premium, inequality, digital divide, automation

The future of democracy in developed countries will depend on their ability to deal with the problem of a disappearing middle class.

Chapter 13, quoting Francis Fukuyama on the political stakes of automation. — democracy, middle class decline, political economy

If people race alongside the machine, they are less likely to rage against it.

Chapter 13, Frey's argument that education is the key to preventing a political backlash against automation. — education, automation, political economy, adaptation

Had it not been for the violent collisions and interruptions resulting from erroneous views among the operatives, the factory system would have been developed still more rapidly and beneficially for all concerned.

Chapter 5, quoting Andrew Ure's defense of mechanization, blaming workers rather than the system for the hardships of industrialization. — Industrial Revolution, labor conflict, blame the workers

People have higher expectations than at the time of Engels's pause. They have the right to vote. And they are already demanding change.

Final lines of the concluding chapter, on why the political stakes of automation are higher now than during the Industrial Revolution. — democracy, political power, automation anxiety, populism