When you think of the economy, you may think of terabytes of data crisscrossing the cloud, farmers plowing a field, trucks on a tangle of freeways, and snaking lines of conveyor beltsa humming network whose health is measured in acronyms like GDP or CPI.
But the economy is also a web of kitchen tables. And what happens at those tables determines the wealth of nations.
Economists talk about human capital, by which they mean everyone from a toddler spooning applesauce in a house down a gravel driveway…

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