エピソード

  • The Algorithm’s News Diet: Why AI Trusts the Government but Falls for Repetition

    The Algorithm’s News Diet: Why AI Trusts the Government but Falls for Repetition
    2026/05/01
    This episode explores a new paper revealing two significant biases in AI systems when consuming news. It details how AI inherently trusts government sources more than traditional media and is highly susceptible to believing information simply because it's repeated often. Listeners will learn that these biases stem from statistical correlations in training data, not human-like trust, creating vulnerabilities in how AI processes information.
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    14 分
  • The Mind at Work: Isolating the Cognitive Cost of Early Retirement

    The Mind at Work: Isolating the Cognitive Cost of Early Retirement
    2026/05/01
    This episode discusses research revealing that early retirement, particularly from cognitively demanding professions, can lead to a measurable decline in cognitive function, affecting areas like verbal fluency and memory. Listeners will learn how a "use it or lose it" principle applies to brain health, with the mental stimulation of work acting as a protective factor, and how a natural experiment demonstrated this causal link independently of other factors.
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    9 分
  • The Tinshemet Convergence: Unearthing the Shared Culture of Early Humans

    The Tinshemet Convergence: Unearthing the Shared Culture of Early Humans
    2026/04/25
    This episode explores groundbreaking research from Tinshemet Cave in Israel, which dramatically redefines the interaction between early *Homo sapiens* and Neanderthals in the Middle Palaeolithic Levant. It challenges the traditional narrative of competitive exclusion, presenting compelling evidence of profound cultural exchange, shared hunting strategies, and symbolic burial rituals, suggesting a period of "behavioural uniformity." Listeners will learn how unique preservation conditions at the site revealed a 110,000-year-old cemetery, reframing the region as a "melting pot" of cultural homogenization rather than a battleground.
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    16 分
  • The Superionic Secret: Spiraling Hydrogen and the Wonky Magnetic Fields of the Ice Giants

    The Superionic Secret: Spiraling Hydrogen and the Wonky Magnetic Fields of the Ice Giants
    2026/04/25
    This episode explores the long-standing mystery of Uranus and Neptune's wildly tilted and off-center magnetic fields, which have baffled planetary scientists since Voyager 2's flybys. It discusses how previous models struggled to explain both the fields' unusual orientation and their stability. The episode then introduces new research proposing that a bizarre, quasi-one-dimensional superionic state of carbon hydride deep within their mantles could be the missing piece, offering a groundbreaking explanation for these ice giants' unique magnetic properties.
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    19 分
  • Goodhart’s Law in the Atmosphere: The Unseen Costs of Blue Skies

    Goodhart’s Law in the Atmosphere: The Unseen Costs of Blue Skies
    2026/04/25
    This episode explores China's "war on pollution," which successfully reduced fine particulate matter (PM2.5) but inadvertently led to a significant surge in ground-level ozone, an equally dangerous pollutant. A new NBER paper reveals this "unseen cost" partially erased the policy's benefits, highlighting a complex pollutant substitution effect. Listeners will learn about the unintended consequences of environmental policies and the importance of considering pollutant interactions.
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    16 分
  • The 865-Scientist Stress Test: Why Half of Social Science Fails to Replicate

    The 865-Scientist Stress Test: Why Half of Social Science Fails to Replicate
    2026/04/20
    This episode discusses the landmark SCORE study, which revealed that nearly half of social science findings fail to replicate and their reported impact is often significantly overstated. It explores why DARPA funded this extensive audit and clarifies the crucial distinction between reproducibility and replicability, helping listeners understand the challenges to scientific credibility and how research reliability is assessed.
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    19 分
  • At the Dock vs. At the Register: Unpacking the 2025 Tariff Shock

    At the Dock vs. At the Register: Unpacking the 2025 Tariff Shock
    2026/04/20
    This episode explores the significant economic impact of the U.S. tariffs implemented in 2025, revealing that 90% of these costs were passed directly onto American importers, contrary to political claims. Listeners will learn how economists used granular product-level data to demonstrate that U.S. businesses, not foreign countries, bore the brunt of this historically restrictive trade policy.
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    18 分
  • The Leisure Reversal: How Medicaid Quietly Shrank the US-Europe Work Gap

    The Leisure Reversal: How Medicaid Quietly Shrank the US-Europe Work Gap
    2026/04/20
    This episode explores new research that significantly challenges the long-standing narrative of Americans working considerably more hours than Europeans. It reveals that about half of this hours-worked gap has vanished, primarily due to a decline in U.S. labor force participation rather than employed individuals reducing their hours. Listeners will learn how this macroeconomic shift contradicts decades of economic understanding, stemming back to influential work by Edward Prescott, and the sophisticated methodology used to uncover these findings.
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    15 分