The Skeptics' Guide to the Universe

The Skeptics Guide #1079 - Mar 14 2026

March 14, 2026

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  • The historical debate over medieval bathing frequency remains inconclusive, relying on inference rather than definitive documentation, though most evidence suggests bathing was more frequent than commonly mythologized. 
  • The Fundamental Attribution Error is a pervasive cognitive bias where individuals attribute others' negative actions to internal traits while attributing their own to external circumstances, a bias potentially stronger in individualistic societies. 
  • Recent research suggests a major breakthrough in increasing crop yields by 50% may be possible by genetically engineering the simpler 'star' region mechanism from hornworts into C3 plants like wheat and rice to concentrate Rubisco, though the CO2 delivery mechanism remains a challenge. 
  • A recent supernova observation (SN202024AFAV) provides strong model support that superluminous supernovae are powered by the rotational energy dumped into the expanding debris by a newly formed magnetar, offering a new laboratory for studying general relativity via frame-dragging. 
  • There is no credible, peer-reviewed scientific evidence supporting the claim that the U.S. government deliberately released ticks into the wild to cause Lyme disease, and claims citing non-scientific sources are dismissed as 'dumpster diving.' 
  • Large Language Models (LLMs) are highly susceptible to repeating medical misinformation when it is framed using authoritative clinical language, even though they are adept at detecting logical fallacies. 
  • The terms 'global warming' and 'climate change' are not interchangeable rebranding efforts by deniers, as 'climate change' predates 'global warming' and encompasses broader climatic shifts beyond just temperature increases. 

Segments

Medieval Bathing Feedback Loop
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(00:00:58)
  • Key Takeaway: Determining the exact frequency of medieval bathing is impossible due to a lack of direct documentation, leading to conflicting inferences from available evidence.
  • Summary: Listeners provided feedback suggesting medieval people bathed more often than previously stated, challenging the myth that they bathed only a few times a year. Sources conflict, with some suggesting bathing occurred four or five times a year or monthly, often in public bathhouses or rivers. The lack of direct documentation forces historians to make inferences based on the existence of bathhouses and knowledge of filth’s health impact.
Fundamental Attribution Error Explained
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(00:13:23)
  • Key Takeaway: The Fundamental Attribution Error involves overemphasizing internal personality traits for others’ negative actions while attributing one’s own negative actions to external circumstances.
  • Summary: Coined by psychologist Lee Ross, this error describes the tendency to see others’ mistakes as character flaws (traits) while viewing one’s own mistakes as situational errors (states). This bias is contrasted with the self-serving bias, where good deeds are attributed to internal excellence, but good deeds by others are attributed to external advantages. Countering this bias through the principle of charity can soften personal anger and improve interactions.
Photosynthesis Efficiency Breakthrough
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(00:24:36)
  • Key Takeaway: Researchers found that adding a small, Velcro-like tail region (RBCS star) from hornwort Rubisco to other plants successfully caused the enzyme to clump, a crucial step toward engineering C4-like efficiency.
  • Summary: Rubisco, the most common enzyme on Earth, is inefficient because it evolved before atmospheric oxygen accumulated, leading to wasteful side reactions with O2. C4 plants evolved complex carbon-concentrating mechanisms (CCMs) like specialized sheath cells to overcome this, but these are genetically complex to import into C3 crops like wheat and rice. The hornwort ‘star’ tail offers a much simpler, single-gene modification to concentrate Rubisco, though the CO2 delivery system still needs to be integrated for a potential 50% yield increase.
Magnetar Birth Solves Supernova Mystery
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(00:37:48)
  • Key Takeaway: The extreme brightness and bumpy light curves of superluminous supernovae are likely explained by the rotational energy of a newly formed magnetar being dumped into the expanding supernova debris.
  • Summary: Superluminous supernovae are ten times brighter than standard core-collapse events, suggesting an additional energy source like a magnetar. The model suggests the rapid deceleration of the newly formed magnetar’s rotation transfers immense rotational energy into the surrounding debris, causing the extra luminosity. Furthermore, the magnetar’s spinning accretion disk causes frame-dragging, which modulates how much debris glow is visible from Earth, explaining the observed light curve bumps.
Lyme Disease Origin Conspiracy Debunked
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(00:52:01)
  • Key Takeaway: Claims, amplified by figures like Dr. Robert W. Malone, that Lyme disease originated from a US bioweapons program are unsubstantiated, as genetic evidence shows the bacteria (Borrelia burgdorferi) is ancient in North America.
  • Summary: The conspiracy narrative links the discovery of Lyme disease near Old Lyme, Connecticut, to the nearby Plum Island research facility, suggesting an escaped tick vector experiment. However, genetic studies confirm that Borrelia burgdorferi has circulated in North American wildlife for thousands of years, predating the disease’s formal identification and any alleged bioengineering. The evidence cited for the bioweapons link is entirely circumstantial, relying on inference rather than verified documents.
Lyme Disease Conspiracy Debunked
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(01:00:30)
  • Key Takeaway: Claims that the U.S. government deliberately released ticks causing Lyme disease lack credible, peer-reviewed scientific evidence, and cited sources are often unreliable.
  • Summary: There is no scientific evidence linking the U.S. government to the deliberate release of ticks causing Lyme disease. The ‘Swiss agent’ (Rickettsia Helvetica), first identified in Switzerland, is a tick-borne illness endemic to Europe, not significantly present in the Americas, and its mention is used to bolster unsupported conspiracy narratives. Conspiracy theories often rely on ‘dumpster diving’ through declassified documents without scientific context to spin sinister narratives.
Magnetar Wind Energy Transfer
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(01:04:42)
  • Key Takeaway: The luminosity of a magnetar’s ejecta is driven by the magnetar wind, consisting of ultra-relativistic particles and radiation, which heats the ejecta and transfers rotational energy.
  • Summary: The luminosity observed is caused by the magnetar wind interacting with the exploded layers (ejecta) of the star. This interaction involves ultra-relativistic particles (protons and electrons) and radiation (X-rays and gamma rays) heating the ejecta, making it brighter. This process of particle and radiation emission is what slows the magnetar and transfers its rotational energy.
Chatbots and Medical Misinformation
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(01:05:50)
  • Key Takeaway: While LLMs score highly on medical exams, real-world user prompting drastically reduces diagnostic accuracy, and they are highly susceptible to repeating health misinformation embedded in authoritative clinical language.
  • Summary: Approximately 40 million daily global prompts concern healthcare, yet user error significantly drops LLM diagnostic accuracy from 94.9% (alone) to 34.5% (with users). LLMs are most susceptible to fabricated data when it is embedded in language mimicking real hospital discharge notes, as they prioritize authoritative linguistic cues over factual verification. This highlights the danger of relying on current LLMs for medical advice without expert human oversight.
Data Trends vs. Establishing Trends
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(01:21:34)
  • Key Takeaway: Citing a short-term observation (like the hottest 10 years) is not the same as cherry-picking data when establishing a long-term statistical trend, as the former confirms a model while the latter is used to build the model.
  • Summary: Establishing a statistically significant trend in annual average global temperatures requires gathering multiple decades of data to rule out natural cycles. Citing the hottest 10 years confirms an established trend predicted by climate models, which is a different analytical task than gathering initial data to define the trend itself. Furthermore, rebranding terms like ‘global warming’ to ‘climate change’ is often a marketing tactic used by pseudoscience proponents, not an indication of scientific dishonesty in the climate science community.
Debate Tactics and Strawmanning
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(01:30:03)
  • Key Takeaway: Apparent steelmanning, characterized by patronizing kindness, can be a rhetorical trick used to set up a strawman argument by oversimplifying an opponent’s position based on false, unstated major premises.
  • Summary: Charlie Kirk’s debate style involved appearing to steelman a student’s argument about systemic racism before pivoting to a flawed counter-argument based on false equivalencies and exaggerated statistics (e.g., the single-parent household rate). This tactic disarms the opponent by following the form of good argumentation (kindness, apparent agreement) while arguing against a simplified or incorrect version of the original claim. The underlying flaw in such rhetoric is relying on unstated, false major premises to support the conclusion.
Science or Fiction: News Review
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(01:41:09)
  • Key Takeaway: Research confirms that widowers in Japan face increased risk of dementia and mortality post-bereavement, while widows often experience increased long-term happiness, and scientists have developed a reversible technique to make living mouse brains transparent for imaging.
  • Summary: The GLP-1 drug study finding that patients regain most weight after stopping treatment is fiction; a real-world observational study suggested most people stabilize weight with lifestyle changes if they have a maintenance plan. The bereavement study aligns with prior research showing men fare worse than women after spousal loss due to differences in social support networks. The technique ‘SEEDB-Live’ allows researchers to make living mouse brains transparent using formulated albumin, which is reversible and minimally impacts brain function.