LSAT Logic Applied

Andrew Leahey

“LSAT Logic Applied” breaks down everyday arguments in news, politics, and ads using the tools of LSAT logical reasoning. Learn to spot flawed assumptions, strengthen arguments, and think like a law student—without "prepping" for the test. Quick, clear, and a little nerdy.

  1. 8 may

    Life’s Ingredients Are Not Life: The Logic of Detecting Alien Biology

    Can scientists detect life without knowing what alien life looks like? A new article about NASA’s Bennu asteroid sample and a machine-learning framework called LifeTracer raises exactly that question. Material from the asteroid Bennu contained many of life’s chemical building blocks, including nucleobases, amino acids, and complex organic molecules. But that does not mean scientists found life. In this episode of LSAT Logic Applied, I use core LSAT concepts like necessary and sufficient conditions, false positives, causation, analogy, and assumption testing to unpack the difference between chemistry that is consistent with life and chemistry that proves life. The episode also looks at LifeTracer, a new approach that classifies full chemical patterns rather than searching for one decisive biosignature. That move may help scientists avoid Earth-centered assumptions—but it also raises a classic LSAT question: how much can a model trained on known Earth biology and meteorite chemistry tell us about unknown samples from Mars, Europa, Enceladus, or beyond? This episode is about astrobiology, but the logic applies everywhere: evidence can be relevant without being conclusive. Life’s ingredients may be necessary for life, but they are not sufficient to prove life existed.

    14 min

  2. 23 abr

    Is Everyone Really Dehydrated? The Logic Behind Gatorade’s Big Claim

    A new press release from Gatorade claims that over 150 million Americans feel dehydrated—and positions its products as a science-backed solution that can hydrate “better, faster, or longer than water.” That sounds compelling. But what exactly is being claimed? In this episode of LSAT Logic Applied, I break down the argument using core LSAT concepts like equivocation, necessary assumptions, problem-solution framing, and vague appeals to authority. When does “feeling dehydrated” actually mean dehydration? What does “better than water” mean without context? And is hydration really confusing—or just being framed that way? This episode explores how definitions, framing, and selective use of science can turn an ordinary condition into a large-scale problem with a convenient solution. If you’re interested in applying LSAT-style reasoning to marketing, health claims, and everyday arguments, this one’s for you.

    7 min

  3. 20 abr

    Linked to Death? The Logic Behind an IBS Drug Study

    A new large-scale study found that some medications used by patients with irritable bowel syndrome—especially antidepressants, and in IBS-D patients loperamide and diphenoxylate—were associated with higher all-cause mortality, while other IBS treatments were not. That is a serious finding. But what exactly does it prove? In this episode of LSAT Logic Applied, I break down the study using classic LSAT concepts like causation versus correlation, confounding by indication, scope, statistical framing, and overreading cautious conclusions. The central lesson is simple but important: a strong association can justify concern without yet proving that the medication itself caused the outcome. This is a good example of how scientific headlines can be both grounded and easy to overread. When does “linked to” become “caused by?” What would strengthen that inference, and what would weaken it? And how should we think about large observational studies that are careful, sophisticated, and still not the same thing as proof? If you like applying LSAT-style reasoning to medicine, research, and public discourse, this episode is for you.

    9 min

  4. 16 abr

    Millionaire, But Not Rich? The Logic of Relative Wealth

    A Washington Post story reports that more Americans are millionaires than ever before—but many of them still do not feel rich. That sounds intuitive in an economy shaped by inflation, soaring housing costs, and retirement wealth that exists mostly on paper rather than in cash. But what exactly follows from that? In this episode of LSAT Logic Applied, I break down the argument using classic LSAT concepts like equivocation, alternative explanations, statistical framing, and scope shift. The key question is not whether $1 million means less than it once did. It does. The harder question is whether that means millionaire status no longer signals wealth—or whether the argument quietly changes the meaning of “rich” along the way. This is a great case study in how real-world arguments often hinge not on disputed facts, but on slippery categories. When does “not as rich as before” become “not rich at all”? And how do we tell the difference between feeling middle-class and actually being middle-class? If you like applying LSAT-style reasoning to economics, policy, and public discourse, this episode is for you.

    9 min

  5. 13 abr

    A Cash Crisis—or a False Necessity? USPS Under the LSAT Lens

    The U.S. Postal Service says it may run out of cash within a year—and is suspending pension contributions to free up $2.5 billion. The logic seems straightforward: there’s a problem, this action helps solve it, so it must be justified. But does that conclusion actually follow? In this episode of LSAT Logic Applied, we break down the argument using core LSAT concepts like necessary vs. sufficient conditions, alternative explanations, and scope shifts. While the USPS identifies a real financial constraint and a measure that alleviates it, the reasoning may go a step too far—treating one workable solution as if it were the only viable option. Along the way, we explore key logical questions: When does a solution become a necessity? How do we spot ignored alternatives in policy arguments? And what assumptions are required to justify a major financial decision? This isn’t just about the Postal Service—it’s about how easily “this helps” turns into “this must be done.” If you want to sharpen your ability to analyze real-world arguments with LSAT precision, this episode is a perfect case study.

    7 min

  6. 9 abr

    CCTV, Crime, and Causation: When Evidence Evolves Over Time

    A new study of CCTV cameras in Newark suggests something surprising: crime reduction effects may take years to appear. In the short term, the cameras showed little impact—but after three to four years, auto theft dropped significantly. Researchers call these “sleeper effects,” and the policy takeaway is intuitive: short-term studies may miss what really matters. But does that conclusion follow? In this episode of LSAT Logic Applied, we break down the argument using two classic LSAT lenses: Parallel Reasoning and Parallel Flaw. First, we examine the study’s strongest move—testing outcomes across different time horizons to capture effects that unfold slowly. Then we look at where the reasoning may go too far, shifting from “longer studies can reveal effects” to “short-term studies are unreliable.” Along the way, we explore key logical issues: When does better evidence justify broader conclusions? How do we distinguish methodological insight from overgeneralization? And what assumptions are required to treat time as the decisive factor? This isn’t just about surveillance or crime policy. It’s about how we interpret evolving evidence—and how easily strong reasoning can slide into flawed conclusions. If you want to sharpen your ability to analyze real-world arguments the way the LSAT does, this episode is a perfect case study.

    6 min

  7. 6 abr

    Big Bee Breakthrough: Science or Scope Shift?

    A new study reports a striking result: a lab-engineered diet boosted bee colony growth by up to 15 times. The implication? A potential breakthrough in protecting pollinators—and even stabilizing global food supply chains. But how strong is that argument, really? In this episode, we apply LSAT Logical Reasoning tools to unpack the claim. We examine the difference between causation and real-world impact, the risks of generalizing from controlled experiments, and the subtle shift from a narrow scientific result to sweeping policy implications. The core question isn’t whether the science is impressive—it is. The question is whether the conclusion goes further than the evidence can support. If a solution works in the lab, does that mean it solves the problem in the wild? And when does a compelling mechanism become an overstated claim? This episode breaks it down.

    6 min

  8. 2 abr

    Can Solar Storms Trigger Earthquakes?

    Can activity on the Sun trigger earthquakes on Earth? A new scientific model suggests that solar storms may influence fault lines through changes in the ionosphere, potentially nudging already unstable regions of the Earth’s crust toward seismic activity. It’s a striking idea—one that combines space weather, geophysics, and a plausible physical mechanism. But does the evidence actually support the conclusion? In this episode of LSAT Logic Applied, we break down the argument using core LSAT reasoning tools. We examine the difference between correlation and causation, explore the risk of reverse causality, and ask whether a theoretical mechanism is enough to establish real-world impact. We also look at how selective evidence and unfalsifiable framing can make a claim sound stronger than it is. This episode isn’t about whether solar activity affects the atmosphere—it’s about whether that influence meaningfully translates into earthquakes. And more broadly, it’s about how to evaluate scientific claims that connect complex systems with limited evidence. If you want to sharpen your ability to spot weak assumptions and overextended conclusions, this is exactly the kind of argument the LSAT is designed to test.

    6 min
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“LSAT Logic Applied” breaks down everyday arguments in news, politics, and ads using the tools of LSAT logical reasoning. Learn to spot flawed assumptions, strengthen arguments, and think like a law student—without "prepping" for the test. Quick, clear, and a little nerdy.

Información

  • Creador
    Andrew Leahey
  • Años de actividad
    2 k
  • Episodios
    28
  • Clasificación
    Apto
  • Copyright
    © Andrew Leahey
  • Mostrar sitio web
    LSAT Logic Applied

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