Episode Summary
Executive Summary: Tim Harford dismantles the myth of the mummy’s curse surrounding Tutankhamun and the earlier “unlucky mummy” tale, showing how selection bias, sensational journalism, and placebo/nocebo psychology created a believable but weakly evidenced legend. He argues that mundane explanations—not supernatural forces—best fit the deaths and misfortunes tied to these stories.
Main Topics: The legend of the mummy’s curse (Priority: 5/5): Harford recounts the stories linking cursed Egyptian artifacts to deaths, accidents, and bad luck, from the Princess of Amun Ra coffin case to Tutankhamun’s tomb. How newspapers amplified the myth (Priority: 5/5): Rival papers and rumor-driven reporting turned coincidences and hearsay into a coherent, spooky narrative that sold papers and outlived rebuttals. Placebo and nocebo as psychological mechanisms (Priority: 4/5): The episode uses Franz Anton Mesmer and Benjamin Franklin to explain how belief can produce real physical effects, including illness-like symptoms from expectation. Selection bias and pattern-making (Priority: 5/5): Harford shows that we remember the striking, scary coincidences and ignore the far larger set of non-events, making the curse seem stronger than it was. Rational investigation of the tomb deaths (Priority: 5/5): He cites epidemiological analysis suggesting no meaningful curse effect among those associated with the tomb, and explains Carnarvon’s death by infection and pneumonia. Why the story survives (Priority: 3/5): The episode argues that the curse persists because it is a better story than reality: eerie, repeatable, and adaptable to new contexts like data algorithms.
Key Arguments: The “curse” stories are largely built from hearsay, retrofitted details, and newspaper sensationalism rather than verified evidence. Selection bias makes rare, memorable deaths feel like proof while ignoring the many people who visited the tomb and suffered nothing unusual. Benjamin Franklin’s investigation of mesmerism showed that belief alone can create symptoms, helping explain nocebo-like reactions among people expecting harm. Lord Carnarvon’s death is plausibly explained by an infected shaving nick leading to pneumonia, not a pharaonic curse. Modern analysis published in the British Medical Journal found scant evidence of a curse among those exposed to Tutankhamun’s tomb. The earlier Titanic-linked mummy story is demonstrably false: the coffin case never left the British Museum and was not on the ship. The same storytelling logic appears in modern data myths, such as the Target pregnancy-coupon anecdote, which may reflect algorithmic overclaiming or simple selection bias.
Data Points: Time since Princess of Amun Ra burial: More than 3,000 years - The opening legend about the unlucky mummy and later discoveries Tutankhamun tomb excavation date: 1922 - Howard Carter’s discovery of the sealed tomb in the Valley of the Kings Carnarvon’s dig delay: 15 years - Carter’s long search before the tomb breakthrough Public warning before entry: 6 weeks - A rumored prophecy that Carnarvon would die within six weeks Canary incident timing: The day Carter began excavating - Carter’s canary was eaten by a cobra, framed as an omen Epidemiology sample: 44 Westerners - Mark Nelson’s BMJ analysis of those in Egypt during the dig Potentially exposed vs. unexposed: 25 visited the tomb; 19 did not - Comparison group in Nelson’s study Average survival after visit: 20 years - Average remaining life for those who visited the tomb Carnarvon survival after visit: 17 years - Howard Carter’s death came years later; Carnarvon died earlier from illness Placebo trial dropout: 5% - Clinical-trial participants dropping out due to perceived side effects from placebos
Pivotal Quotes: "Yes. Wonderful things. Wonderful things." — Howard Carter: Carter’s first view into Tutankhamun’s burial chamber "Death shall come on swift wings to whoever toucheth the tomb of the Pharaoh." — Rival newspaper report / tomb warning: A sensationalized warning attributed to the tomb and repeated by the press "If these people can be persuaded to forbear their drugs in expectation of being cured by only the physician's finger or an iron rod pointing at them, they may possibly find good effects." — Benjamin Franklin: Franklin’s insight that belief can alter health outcomes, anticipating placebo effects
Implications: The episode warns listeners to distrust dramatic causal stories that lean on coincidence, hindsight, and missing comparisons. In journalism, medicine, and data-driven marketing, rigorous controls and skepticism are essential to avoid being fooled by myths.