(Roughly) Daily

Dylan Matthews talks with Jared Rubin and Mark Koyama, the authors of an ambitious new economic history…

You can crudely tell the story of our species in three stages. In the first, which lasted for the vast majority of our time on Earth, from the emergence of Homo sapiens over 300,000 years ago to about 12,000 years ago, humans lived largely nomadic lifestyles, subsisting through hunting and foraging for food. In the second, lasting from about 10,000 BC to around 1750 AD, humans adopted agriculture, allowing for a more secure supply of food and leading to the establishment of towns, cities, even empires.

The third period, in which we all live, is characterized by an unprecedented phenomenon: sustained economic growth. Quality of life went from improving very gradually if at all for the vast majority of human history to improving very, very quickly. In the United Kingdom, whose Industrial Revolution kicked off this transformation, GDP per capita grew about 40 percent between 1700 and 1800. It more than doubled between 1800 and 1900. And between 1900 and 2000, it grew more than fourfold.

What today we’d characterize as extreme poverty was until a few centuries ago the condition of almost every human on Earth. In 1820, some 94 percent of humans lived on less than $2 a day. Over the next two centuries, extreme poverty fell dramatically; in 2018, the World Bank estimated that 8.6 percent of people lived on less than $1.90 a day. And the gains were not solely economic. Before 1800, average lifespans didn’t exceed 40 years anywhere in the world. Today, the average human life expectancy is more like 73. Deaths in childhood have plunged, and adult heights have surged as malnutrition decreased.

The big question is what drove this transformation. Historians, economists, and anthropologists have proposed a long list of explanations for why human life suddenly changed starting in 18th-century England, from geographic effects to forms of government to intellectual property rules to fluctuations in average wages.

For a long time, there was no one book that could explain, compare, and evaluate these theories for non-experts. That’s changed: How the World Became Rich, by Chapman University’s Jared Rubin and George Mason University’s Mark Koyama, provides a comprehensive look at what, exactly, changed when sustained economic growth began, what factors help explain its beginning, and which theories do the best job of making sense of the new stage of life that humans have been experiencing for a couple brief centuries…

Two economic historians explain what made the Industrial Revolution, and modern life, possible: “About 200 years ago, the world started getting rich. Why?,” from @dylanmatt @jaredcrubin @MarkKoyama in @voxdotcom.

* Peter Drucker

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As we contemplate change and its causes, we might spare a thought for Charles Francis Jenkins; he died on this date in 1934. An engineer and inventor, he is rightly remembered for his contributions to film and television: he invented a film projector and sold the rights to Thomas Edison, who marketed it as the Vitascope, the projector that Edison used in paid, public screenings in vaudeville theaters; and he opened the first television broadcasting station in the U.S. (W3XK in Washington, D.C.).

But Jenkins also pioneered in other areas. He was the first to move an automobile engine from under the seat to the front of the car; he invented the automotive self starter (replacing the crank) and an improved altimeter for aviation; and he created the cone-shaped drinking cup.

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