Megan McArdle on the Oedipus Trap

Episode Summary

Executive Summary: Megan McArdle and Russ Roberts discuss Walter Freeman’s lobotomy crusade as a case study in confirmation bias, self-deception, and the moral danger of “following the science” uncritically. They explore why doctors once embraced barbaric mental-health treatments, how caregivers’ incentives can distort judgment, and how the Oedipus myth captures the psychological trap of refusing to admit one’s own catastrophic errors.

Main Topics: Walter Freeman and the history of lobotomy (Priority: 5/5): McArdle explains Freeman’s role in popularizing lobotomy, its crude technique, its decline after antipsychotics, and his refusal to abandon the practice. Confirmation bias and self-deception (Priority: 5/5): A central theme is that Freeman likely interpreted patient follow-ups as evidence of success because he needed to believe he had done good, illustrating the human tendency to rationalize harmful decisions. Medical context and desperate treatments (Priority: 4/5): The conversation situates lobotomy among other grim early-20th-century treatments for mental illness, emphasizing how limited options and terrible institutions made dangerous interventions seem plausible. Informed consent and caregiver incentives (Priority: 4/5): They discuss how family and caregiver convenience can influence treatment choices, especially for patients with dementia, children, or severely mentally ill adults, raising ethical concerns about sedation and control. The Oedipus trap as moral-psychological framework (Priority: 5/5): McArdle uses Oedipus to describe the impossibility of living with knowledge of a terrible mistake, especially when one’s identity or reputation is invested in the original decision. Semmelweis, dissenters, and the cost of being right (Priority: 4/5): Semmelweis is used as a parallel example: a truth-teller whose correct insight about handwashing was resisted because it implicated doctors in patient deaths and challenged professional pride. “Follow the science” and epistemic humility (Priority: 5/5): The episode critiques simplistic appeals to science as slogans, arguing that scientific consensus matters but must still be interrogated, especially when incentives and reputations are at stake.

Key Arguments: Freeman’s continued support for lobotomy despite its obvious harms shows how powerful confirmation bias and ego can be in medicine. Lobotomy was not universally perceived as a total zombie-making procedure; some patients and families reported mixed or even positive outcomes, but the overall practice was still highly damaging. Early psychiatric medicine was operating in a world of terrifying institutions and few effective treatments, which helps explain—but does not justify—the appeal of lobotomy and shock therapies. Doctors and caregivers may prefer treatments that make patients easier to manage rather than truly better, so incentives must be scrutinized. The Oedipus myth captures why people resist admitting catastrophic mistakes: acknowledging them can destroy one’s self-concept and legacy. Semmelweis and Freeman both show that truth can be socially hard to accept when it implies that respected professionals have been harming patients. “Follow the science” can become anti-scientific if it is used to demand obedience rather than debate, evidence, and humility. High-stakes decisions should be made cautiously, with safeguards and repeated reassessment, because once reputations are invested, errors become harder to recognize.

Data Points: Walter Freeman's last lobotomy in the U.S.: 1967 - McArdle says the final lobotomy performed by Freeman in the United States was in 1967. Freeman's death: early 1970s - She notes that he died still believing lobotomy was a good idea. Freeman's lifetime output: thousands - He performed thousands of lobotomies and helped inspire many other doctors to do the same. Lobotomy mortality rate: about 5% - Russ cites a quick Google search during the conversation; McArdle agrees the rate was significant but says the exact number may vary. Operation era: 1930s onward - Freeman began promoting and performing the procedure in the 1930s. Antipsychotic turning point: 1954 - The procedure declined rapidly once antipsychotic drugs such as Thorazine and lithium became available. Column draft length: 1600 words - McArdle says her original column draft was 1600 words and was cut down to 850. Published column length: about 850 words - She notes that is the standard EconTalk/Washington Post column length target. Road trips distance: 25,000 miles - McArdle describes Freeman’s frantic late-life road trips as covering roughly 25,000 miles. Early patient follow-up: 1956 to 1969 - She says Freeman’s intensive road-trip follow-ups occurred from about 1956 to 1969. Historical context of ECT: still used today for severe depression - They note electroconvulsive therapy remains in use for severe, treatment-resistant depression. Semmelweis comparison: midwife ward had lower mortality than doctor ward - Russ and McArdle discuss Semmelweis’s observation that mortality differed between two delivery wards.

Pivotal Quotes: "You must not fool yourself. And you are the easiest person to fool." — Russ Roberts: Used to frame the episode’s core theme of self-deception and confirmation bias in medicine and politics. "What I drew from this was that there are some mistakes that no one can live with, even if they were made innocently." — Megan McArdle: Her interpretation of the Oedipus myth as a model for why people deny disastrous errors. "I think we need to be conscious of the fact that the caregivers and the treaters have their own incentives." — Megan McArdle: She explains why treatments may be shaped by convenience and institutional interests, not just patient welfare.

Implications: Listeners should treat medical and policy claims with humility, skepticism, and repeated reassessment. High-stakes experts can fool themselves most when reputations are on the line, so dissent, evidence review, and incentives matter as much as expertise.