Snapshot · Lex Fridman Podcast
Research finds approximately 70% of men and more than 50% of women have at some point fantasized about killing someone, suggesting murder fantasies are a normal, adaptive phenomenon.
Where this was said
At 37:27 · chapter starts 29:23
Shaw recounts how the Robert Pickton case — a Canadian serial killer who killed victims on his farm and allegedly fed them to pigs — first captured her attention as an undergraduate at Simon Fraser University. Her professor, Stephen Hart, was an expert witness on the trial and modeled the 'gallows humor' that made criminal psychology feel like a viable career. The pivot to the psychology of serial killers in general reveals a consistent pattern: profound loneliness undermines 'reality monitoring' — the social checks that keep extreme thinking tethered to shared reality [1] — Julia Shaw "Serial killers are not born with a kill-switch. What many share is profound loneliness and a lack of social networks that perform 'reality …" 32:32 . Without close relationships to challenge distorted thoughts, dark ideation can escalate unchecked. Shaw brings in the parallel to radicalization and psychosis: in all these cases, the absence of a social tether allows extreme worldviews to solidify. The discussion of Jeffrey Dahmer is particularly striking — Shaw expresses genuine sympathy for his desperate (and horrific) attempt to create a permanent companion, calling it a 'sad' manifestation of a desire for connection that, in its core, is universally human. Elizabeth Loftus is mentioned as another expert who has worked on high-profile criminal cases, including Ghislaine Maxwell.
Serial killers are not born with a kill-switch. What many share is profound loneliness and a lack of social networks that perform 'reality monitoring' — the everyday checks that keep thoughts tethered to reality. Without that tether, dark ideation spirals unchecked toward violence.
Shaw's false memory protocol required only three interview sessions to convince the majority of participants they had committed a crime — demonstrating how quickly memory can be manipulated.
In Julia Shaw's PhD research, 70% of participants were led to believe they had committed a crime that never happened and confessed to it using suggestive interview techniques.
Around 70% of men and more than half of women have fantasized about killing someone. Far from being a warning sign, Shaw argues this is adaptive: mentally rehearsing the worst-case scenario is how the brain stress-tests its own moral limits and ultimately reinforces them.
The widely cited ego-depletion model — the idea that willpower is a finite resource that gets depleted — failed to replicate in follow-up studies.
Humans are estimated to have 5,000–7,000 thoughts per day, yet can recall essentially none of them afterward, highlighting why in-the-moment emotional tracking matters.
A large Harvard study found that a wandering mind is an unhappy mind — people report greater happiness when their attention is tethered to the present, even if the task is unpleasant.
A key study finding that we have a 'credit card's worth of plastic' in our bodies was likely skewed because researchers used nitrile gloves that shed plastic particles onto the microplastic detector.
Emotionally sensitive people have a hyperactive amygdala, an underactive prefrontal cortex, and a frayed connection between the two — making emotional regulation structurally harder.
Rejection sensitivity can be observed as early as age 2 or 3, suggesting it has strong developmental and likely genetic roots.
A Yale study found that non-judgmental observation of emotions — without rushing to resolve them — reduces activation in the brain, making it a powerful regulation tool.
Dan Gilbert's research found that the psychological immune system — the brain's ability to justify and find satisfaction in choices — activates most powerfully when a decision is perceived as irreversible.
Barry Schwartz's research found that maximizers — people who try to optimize every decision — tend to achieve objectively better outcomes but report lower happiness than satisficers who choose 'good enough.'
We use essential and analytics cookies to run Vuci. To understand how the site is used: Privacy Policy.
Install Vuci on your phone
Add it to your home screen for a faster, app-like experience.
Install Vuci on your phone
Tap the Share button, then “Add to Home Screen”.
A new version is available
Reload to get the latest Vuci.