Lex Fridman PodcastJulia Shaw: Criminal Psychology of Murder, Serial Killers, Memory & Sex | Lex Fridman Podcast #483
Lex Fridman and Julia Shaw on inside Evil: Julia Shaw On Murder, Memory, Sex, and Green Crime.
In this episode of Lex Fridman Podcast, featuring Julia Shaw and Lex Fridman, Julia Shaw: Criminal Psychology of Murder, Serial Killers, Memory & Sex | Lex Fridman Podcast #483 explores inside Evil: Julia Shaw On Murder, Memory, Sex, and Green Crime Lex Fridman and criminal psychologist Julia Shaw explore how so‑called “evil” behaviors exist on a psychological continuum rather than in a good–evil binary, focusing on the dark tetrad traits and why ordinary people can commit extraordinary harm. They discuss false memories, lie detection, serial killers, murder fantasies, jealousy, kinks, bisexuality, and non‑monogamy, emphasizing empathy and nuance instead of moral panic. Shaw explains her research showing how easily false criminal memories can be implanted, and why this matters for police interviews, therapy, AI systems, and personal wellbeing. In the final part, she introduces her work on environmental crime, arguing that corporate and ecological offenders are best understood through the same psychological lenses as other criminals, and that tech and social science together can be used to prevent harm.
At a glance
WHAT IT’S REALLY ABOUT
Inside Evil: Julia Shaw On Murder, Memory, Sex, and Green Crime
- Lex Fridman and criminal psychologist Julia Shaw explore how so‑called “evil” behaviors exist on a psychological continuum rather than in a good–evil binary, focusing on the dark tetrad traits and why ordinary people can commit extraordinary harm. They discuss false memories, lie detection, serial killers, murder fantasies, jealousy, kinks, bisexuality, and non‑monogamy, emphasizing empathy and nuance instead of moral panic. Shaw explains her research showing how easily false criminal memories can be implanted, and why this matters for police interviews, therapy, AI systems, and personal wellbeing. In the final part, she introduces her work on environmental crime, arguing that corporate and ecological offenders are best understood through the same psychological lenses as other criminals, and that tech and social science together can be used to prevent harm.
IDEAS WORTH REMEMBERING
7 ideasEvil is a spectrum of traits, not a fixed category of people.
Shaw argues that psychopathy, sadism, narcissism, and Machiavellianism exist on continua that all humans fall along; calling people “evil” shuts down understanding, fuels dehumanization, and makes atrocities easier to justify.
Most people are capable of serious harm under the right conditions.
From war crimes to neighbor betrayals, history shows ordinary individuals can commit murder and torture when factors like dehumanization, group identity, loneliness, entitlement, and social pressure align.
Our intuition about who is dangerous or lying is often wrong.
Creepiness and “gut” trustworthiness are poor indicators of actual risk, and even trained police detect lies at chance levels; overconfidence in these instincts contributes to wrongful convictions and broken relationships.
Autobiographical memory is reconstructive and highly fallible.
Nearly all personal memories are partly inaccurate, and with leading questions or suggestive therapy you can implant detailed false memories—even of crimes—so key events should be recorded as soon as possible, outside the brain.
Dark fantasies and kinks are common and not inherently pathological.
Murder fantasies occur in most men and over half of women, and many people have BDSM or other kinks; these can be adaptive ways of mentally rehearsing boundaries or disinhibiting in consensual contexts, rather than signs of “monsters.”
Jealousy, entitlement, and secrecy are strong risk factors in relationships.
Shaw sees chronic jealousy as a red flag rather than proof of love, noting its link to coercive control and partner violence; she suggests honesty, communication, and questioning rigid monogamy norms as healthier defaults for many.
Environmental crime is driven by familiar human motives and group dynamics.
Corporate fraud (e.g., Dieselgate), poaching, and pollution often emerge from conformity, rationalization, and market pressure rather than cartoonish villainy, implying that better enforcement, whistleblower protection, and incentive structures are key to protecting the planet.
WORDS WORTH SAVING
5 quotesWe all have the capacity to kill people and murder people and do other terrible things. The question is why we don't do those things rather than why we do.
— Julia Shaw
When we call somebody evil we say, ‘This person is so different from me that I don't even need to bother trying to understand why they are capable of doing terrible things.’
— Julia Shaw
Most of the time our autobiographical memories are good enough. The question isn't whether they're false, the question is how false.
— Julia Shaw
Fraud works because people know what we want to hear and they tell us the things we want to hear.
— Julia Shaw
What we want is not just to label people; we want to stop that behavior from happening. And the only way we're going to do that is if we understand what led that person there.
— Julia Shaw
QUESTIONS ANSWERED IN THIS EPISODE
5 questionsIf we stop using the word “evil” for people, how should media, courts, and educators talk about horrific crimes without minimizing victims’ suffering?
Lex Fridman and criminal psychologist Julia Shaw explore how so‑called “evil” behaviors exist on a psychological continuum rather than in a good–evil binary, focusing on the dark tetrad traits and why ordinary people can commit extraordinary harm. They discuss false memories, lie detection, serial killers, murder fantasies, jealousy, kinks, bisexuality, and non‑monogamy, emphasizing empathy and nuance instead of moral panic. Shaw explains her research showing how easily false criminal memories can be implanted, and why this matters for police interviews, therapy, AI systems, and personal wellbeing. In the final part, she introduces her work on environmental crime, arguing that corporate and ecological offenders are best understood through the same psychological lenses as other criminals, and that tech and social science together can be used to prevent harm.
Given how easy it is to distort or implant memories, what concrete safeguards should police, therapists, and AI developers put in place right now?
Where is the line between healthy violent or dark fantasies and warning signs that someone might act on them—and who should intervene?
How should couples realistically negotiate jealousy, monogamy, and non‑monogamy in a way that matches human behavior without destroying trust?
What kinds of legal and organizational changes would most effectively deter large‑scale environmental crimes committed by powerful corporations and networks?
EVERY SPOKEN WORD
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