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Recent estimates are that the United States has a shortage of housing volume of 4-7 million homes. A problem of that scale doesn’t happen overnight and involves decades of neglect and inaction. With the chronic lack of housing likely to be a major issue for the foreseeable future, public policy experts have been brainstorming about potential solutions, and a few have dusted off an idea that’s older than the Republic: a tax on the value of land without regard to the buildings and other property improvements on it. Mark and Joe trace the history of the land-value tax, the difficulty of implementing it, and whether it can be part of the solution to our housing crisis. (Recorded April 18, 2025.)

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Like its cousin AGI, quantum computing, which harnesses the quantum states of subatomic particles to perform impossibly difficult computations at lightning speed, is a new-ish technology that many of its proselytizers believe is thisclose to reality. The “quantum supremacy” of this new technology over classical computing promises stunning breakthroughs in areas as disparate as drug development, materials science, weather forecasting, and cybersecurity. Is it for real, though? Joe and Mark discuss the coming quantum revolution, the ways it’s likely to change our lives, and whether it’ll arrive quickly enough to be the subject of a future episode of Mansplaining. (Recorded March 28, 2025.)

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The New York Yankees’ recent relaxation of half-century-old rules about facial hair got Joe to thinking about dress and codes generally. Why do they exist? Where do they come from? Mark takes Joe on a historical tour of dress codes, from ancient Rome and China through medieval Europe and Tudor England, ending in the modern era of school uniforms and casual Fridays. As our heroes discover, attire-related restrictions are less about affirming people than about keeping them in place, serving as effective instruments of social or class control—and sometimes symbols of resistance. (Recorded March 14, 2025.)