Episode 19 · 16 minutes

Leaders Eat Last: Why Some Teams Pull Together and Others Don't

by Simon Sinek, 2014

The Circle of Safety, and four brain chemicals asked to explain more than they can. The 2011 PNAS study found oxytocin promotes in-group favoritism rather than general trust. For neurodivergent leaders: safety is built from predictability more than warmth, and the test is whether anyone has stopped masking.

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Transcript

The whole episode in text, 84 lines. Miles and Nora are synthetic voices reading a script approved by Logan Williamson, LPC.

Read the full transcript

Miles: In a Marine Corps mess hall, the line forms by rank. The most junior people eat first. The most senior eat last. Nobody enforces it and nobody wrote it down. An officer who cut the line wouldn't be punished. He'd simply have told everyone something about himself.

Miles: Today: Leaders Eat Last, by Simon Sinek. In two sentences: organizations perform when people feel safe inside them, because a person who's watching their back can't also be doing their job. The leader's function is to extend that protection outward until everyone is inside it.

Miles: Sixty Books. Presented by Stoar Consulting and Coaching.

Miles: I'm Miles, and this is Sixty Books, from the reading room: sixty of the best management books written in the last hundred years, one each episode, read for leaders and teams who think differently, and for work that has AI in it now whether anyone asked for that or not. Nora's here, and she brought the research.

Miles: Nora, we did the earlier Sinek book last episode. What changed?

Nora: The subject moved from communication to care, and the explanation moved from brain anatomy to brain chemistry. Which means the same structural problem appears in a new costume.

Miles: Give me the central image.

Nora: The Circle of Safety. His argument is that human beings evolved in conditions where the dangers were outside the group, so the group's function was protection. Modern organizations reproduce the dangers inside the circle. Being fired. Being blamed. Being humiliated in a meeting. And a person managing internal threat has less capacity for the external one.

Miles: And a leader's job.

Nora: To draw the circle wide enough that everyone is inside it, and to be the one who absorbs risk rather than distributing it. Which is essentially Willink's argument from episode sixteen, arrived at from an entirely different direction and with a warmer face.

Miles: The chemistry.

Nora: He proposes four chemicals as the machinery. Endorphins, which mask physical pain. Dopamine, which rewards goal completion. Serotonin, which he associates with status and pride. And oxytocin, which he presents as the chemical of trust, love, and human bonding.

Miles: Okay.

Miles: And the argument built on it.

Nora: That the first two are what he calls selfish chemicals, driving individual achievement, and the second two are selfless chemicals, driving relationships. And that modern organizations over reward the first pair, with quarterly targets and individual bonuses, while starving the second, producing places full of achievement and short of trust.

Miles: The observation is fine.

Nora: The observation is arguably correct. The mechanism is where it falls apart.

Miles: Do the critique now, because it's the same pattern as last time.

Nora: The four chemical model is a considerable oversimplification of how neurotransmitters work, and the oxytocin claim in particular hasn't survived the last fifteen years of research.

Miles: Be specific.

Nora: Oxytocin is presented here as the trust and bonding chemical, roughly a moral substance. In two thousand eleven, De Dreu and colleagues published a study in the Proceedings of the National Academy of Sciences with a title that says it directly: oxytocin promotes human ethnocentrism. Administering it increased in group favoritism, and to a lesser degree derogation of people outside the group.

Miles: So it strengthens the circle by sharpening its edge.

Nora: Right.

Nora: The authors explicitly said the findings call into question the view of oxytocin as an indiscriminate love drug, and suggested it has a role in the emergence of intergroup conflict. Related work has found it can increase envy and gloating in competitive comparisons.

Miles: And the trust research itself.

Nora: Has replication problems. The famous nasal spray trust studies have largely failed to reproduce, the pooled effect across studies is close to zero, and there are serious questions about how much intranasal oxytocin reaches the brain at all.

Miles: That's a lot of weight on one molecule.

Nora: And the irony is sharp. A book about widening the circle of safety is built on a chemical whose best documented social effect is making the circle's boundary matter more.

Miles: There's one more chemical claim I want to name, because it gets repeated.

Nora: The treatment of dopamine as the achievement chemical, and the associated argument that modern workplaces and modern technology produce a dopamine driven, addictive, individually oriented culture. That framing is extremely common and it's a caricature of what dopamine does, which is closer to prediction error and motivation to pursue than to pleasure on arrival.

Miles: And why it matters here specifically.

Nora: Because dopamine language gets applied casually to ADHD, usually inaccurately, and usually in a way that ends with a moral instruction about willpower and screens. If a leader has absorbed a pop version of dopamine from a management book, they're more likely to treat a genuine attention difference as a self control problem with a fashionable name.

Miles: The other criticisms.

Nora: The same as last episode. Examples selected on outcome. A manufacturing firm that refused layoffs is held up, and the counterfactual firms are absent. The evolutionary story is a just so narrative that can't be tested. And the framework is unfalsifiable: a company with problems is said to have a broken circle, which is a restatement rather than an explanation.

Miles: Is anything underneath it solid?

Nora: Yes, and this matters. The core observation, that people perform badly when they're managing internal threat, is well supported. It just has a different name and a real research literature: psychological safety, studied properly by Amy Edmondson, which we'll do in a later episode. Sinek is describing a real phenomenon with the wrong machinery attached.

Miles: So what are we holding?

Nora: As a book, it's practitioner literature rather than research: a correct intuition, an incorrect mechanism, and a genuine research literature sitting next to it that the book doesn't use.

Miles: Now the turn, and I want to start with why the circle image is worth keeping despite all that.

Nora: Because safety isn't an abstraction for this audience. Consider what an unsafe workplace costs a neurodivergent employee specifically. Every ambiguous signal has to be interpreted. Every interaction has to be monitored for whether it went wrong. Every difference has to be managed or hidden.

Miles: And that has a name in the literature.

Nora: Camouflaging, and the research consistently associates sustained camouflaging with exhaustion and burnout in autistic adults. Sinek's claim is that people managing internal threat have less capacity for the work. For someone masking full time, that isn't a metaphor about attention. It's a description of where a large fraction of the day's capacity is going.

Miles: So the circle of safety is measured differently here.

Nora: The test isn't whether people feel warm. It's whether anyone has stopped masking. If nobody on your team has ever said I need this done differently, your circle isn't as wide as you think, and the silence isn't contentment.

Miles: What builds it, concretely?

Nora: Predictability, more than warmth, and this is where I'd depart from the book's emphasis. Sinek's imagery is about care and belonging, which are felt. But for a great many people safety is produced by knowing what happens next. Fixed agendas. Advance notice of change. Feedback at scheduled times rather than ambushes. Written decisions. None of those are emotional and all of them lower threat.

Miles: Mm-hm.

Miles: The seniority ritual itself.

Nora: Is worth taking literally. The costly signal is the thing that carries information. A leader who absorbs a public error, who goes last, who takes the inconvenient slot, has demonstrated something that no statement of values can. And for anyone who doesn't read subtle warmth cues, a visible act is legible in a way that a friendly tone is not.

Miles: There's also a specific piece of the book I'd keep.

Nora: His account of what happens when a leader is physically distant from the consequences of their decisions. He argues that abstraction is what makes harm easy: a spreadsheet of headcount isn't a room of people, and the further a decision maker sits from the effect, the worse the decision tends to be.

Miles: And the practical instruction.

Nora: Get closer to the effect. Which for our purposes has a precise application. If you're deciding on office layout, hybrid policy, meeting cadence, or open plan, the people who will bear the cost are the ones you should be talking to before the decision, not after it. And they'll frequently not volunteer, because volunteering means disclosing.

Miles: So the leader has to ask.

Nora: Generally rather than individually. Not is there anything you need, addressed to the one person you suspect, which is an interrogation. But a standing, ordinary channel where anyone can say this arrangement doesn't work for me, used often enough that using it's unremarkable.

Miles: Any warning?

Nora: One, and it's about the family metaphor, which this book leans on. Organizations that describe themselves as families tend to use that language to justify unpaid extra effort and to make ordinary boundary setting feel like betrayal. A circle of safety should reduce what you have to give, not increase it.

Miles: And there's a generational argument in the book I want to deal with quickly.

Nora: A chapter about younger workers, technology, and instant gratification, which is the weakest material in it. Generational claims of that kind have a poor track record, tend to describe age rather than cohort, and are usually recycled from complaints made about every previous generation.

Miles: And it matters here because.

Nora: Because that framing is frequently attached to attention differences. Young people can't focus becomes this employee can't focus becomes a moral rather than a structural reading. If a leader is quoting the phone chapter at you, that's the moment to move the conversation back to conditions.

Miles: And the AI angle.

Nora: The mechanism worth acting on is threat reduction, and a surprising amount of workplace threat is ambiguity.

Miles: Meaning.

Nora: Not knowing where a project stands. Not knowing whether that message was a criticism. Not knowing what the meeting is for. Those are low grade threats running continuously, and most of them are information problems.

Miles: So the useful applications.

Nora: Published context, so nobody has to infer. Agendas circulated in advance, which cost nothing to generate and remove the ambush. And, for the individual, a private place to ask what did that message mean without spending social capital on the question.

Miles: And the downside.

Nora: Safety is produced by a leader's costly action, and none of these tools can perform a costly action. A warm message that took four seconds to generate isn't a signal, it's noise dressed as a signal, and people calibrate to that faster than leaders expect.

Miles: Fair enough.

Miles: And the second one.

Nora: The monitoring capability that arrived with these tools points in exactly the opposite direction to this book. If your people believe the system is watching, you've moved the danger inside the circle, whatever your values page says.

Miles: How much of that is evidence?

Nora: Less than the confidence suggests, and what we owe you on that is read out at the end of the episode in fixed words. Which leaves the book's own test standing. The tool can circulate the agenda. Somebody still has to eat last.

Miles: That's Leaders Eat Last.

Miles: Next time: Multipliers, by Liz Wiseman, and the uncomfortable possibility that you're diminishing your team by accident while trying to help.

Nora: Her list of well meaning diminishers is the closest thing to a mirror on this whole shelf.

Miles: Thank you, Nora. Good work.

Nora: Glad to, Miles.

Miles: Okay. Next book.

Miles: This episode came from Stoar Consulting and Coaching, which produces Sixty Books. Logan Williamson is a Licensed Professional Counselor in Texas and Louisiana. What you heard is education, a book discussed for leaders and teams. It's not coaching, it's not counseling, and it holds no opinion about you.

Nora: The sources for every claim are on the episode page, next to the transcript. Another book tomorrow.

Miles: A note about the hosts. Neither of us is a human being; we're generated voices. Neither of us is a person, neither of us holds a license, and nothing in this episode was about you. AI assisted in drafting the script; the editing and the approval belong to Logan Williamson, a Licensed Professional Counselor in Texas and Louisiana, at Stoar Consulting and Coaching.

Nora: And one note about the AI segment. The evidence that these tools help neurodivergent people at work is early. There are controlled trials now, but they measure things like conversation skill rather than how a job actually goes, and for work itself most of what exists is individual providers reporting success. So take it as promising and not proven. The tools also get rebuilt every few months, so whatever you set up today is built on something that moves.

Sources

The claims in this episode, in the order they come up, with where each comes from. These were sourced after the episode was published, and a claim we could not trace to a source is left off rather than guessed at. 13 claims. Studies in psychology and medicine were checked on PubMed; everything else against the publisher, the paper or the original record.

See the sources
  1. In a Marine Corps mess line the most junior Marines eat first and the most senior eat last, and no order is given for it.

    Sinek, S. (2014). Leaders Eat Last: Why Some Teams Pull Together and Others Don't. Portfolio. ISBN 9781591845324. Open Library record, https://openlibrary.org/isbn/9781591845324 (7 January 2014, 368 pages).

    Quotation from the book collected on Goodreads, https://www.goodreads.com/work/quotes/21977839?page=3 : "the most junior are served first" and "no order is given. Marines just do it."

  2. The book explains behaviour at work through brain chemicals, among them endorphins, dopamine and oxytocin. It ties dopamine to effort toward a goal and oxytocin to shared hardship, and warns against selfish pursuits out of balance with selfless ones.

    The author's site, https://simonsinek.com/books/leaders-eat-last/ , lists among its questions on the book "What are the 'happy chemicals' of the brain and how do they relate to leadership?"

  3. De Dreu and colleagues (2011), in the Proceedings of the National Academy of Sciences: oxytocin increased in-group favoritism and, to a lesser degree, derogation of people outside the group. The authors wrote that this calls into question the view of oxytocin as an indiscriminate love drug and suggests a role in intergroup conflict.

    De Dreu, C. K. W., Greer, L. L., Van Kleef, G. A., Shalvi, S., & Handgraaf, M. J. J. (2011). Oxytocin promotes human ethnocentrism. Proceedings of the National Academy of Sciences of the United States of America, 108(4), 1262-1266. PMID: 21220339. DOI: 10.1073/pnas.1015316108 . Checked on PubMed 2026-10-09.

  4. Related work found oxytocin can increase envy and gloating in competitive comparisons.

    Shamay-Tsoory, S. G., Fischer, M., Dvash, J., Harari, H., Perach-Bloom, N., & Levkovitz, Y. (2009). Intranasal administration of oxytocin increases envy and schadenfreude (gloating). Biological Psychiatry, 66(9), 864-870. PMID: 19640508. DOI: 10.1016/j.biopsych.2009.06.009 . Checked on PubMed 2026-10-09.

  5. The famous nasal spray trust finding has not replicated well.

    Kosfeld, M., Heinrichs, M., Zak, P. J., Fischbacher, U., & Fehr, E. (2005). Oxytocin increases trust in humans. Nature, 435(7042), 673-676. PMID: 15931222. DOI: 10.1038/nature03701 . The original study.

    Nave, G., Camerer, C., & McCullough, M. (2015). Does oxytocin increase trust in humans? A critical review of research. Perspectives on Psychological Science, 10(6), 772-789. PMID: 26581735. DOI: 10.1177/1745691615600138 : "the simplest promising finding associating intranasal OT with higher trust has not replicated well."

    Declerck, C. H., Boone, C., Pauwels, L., Vogt, B., & Fehr, E. (2020). A registered replication study on oxytocin and trust. Nature Human Behaviour, 4(6), 646-655. PMID: 32514040. DOI: 10.1038/s41562-020-0878-x : a large double-blind, placebo-controlled replication with over 95 percent power found no effect of oxytocin on trusting behaviour in the condition matching the original.

  6. There are serious questions about how much intranasal oxytocin reaches the brain, and most intranasal studies have been underpowered.

    Leng, G., & Ludwig, M. (2016). Intranasal oxytocin: myths and delusions. Biological Psychiatry, 79(3), 243-250. PMID: 26049207. DOI: 10.1016/j.biopsych.2015.05.003 : "very little of the huge amounts applied intranasally appears to reach the cerebrospinal fluid."

    Walum, H., Waldman, I. D., & Young, L. J. (2016). Statistical and methodological considerations for the interpretation of intranasal oxytocin studies. Biological Psychiatry, 79(3), 251-257. PMID: 26210057. DOI: 10.1016/j.biopsych.2015.06.016 : intranasal studies "are generally underpowered," with a high probability that most published findings are not true effects.

  7. Dopamine is closer to prediction error and the motivation to pursue a reward than to pleasure on arrival.

    Schultz, W., Dayan, P., & Montague, P. R. (1997). A neural substrate of prediction and reward. Science, 275(5306), 1593-1599. PMID: 9054347. DOI: 10.1126/science.275.5306.1593 : dopamine neuron output "apparently signals changes or errors in the predictions of future salient and rewarding events."

    Berridge, K. C., & Robinson, T. E. (1998). What is the role of dopamine in reward: hedonic impact, reward learning, or incentive salience? Brain Research Reviews, 28(3), 309-369. PMID: 9858756. DOI: 10.1016/s0165-0173(98)00019-8 : dopamine is needed for "wanting" incentives, not for "liking" them.

  8. The book holds up a manufacturing company and its chief executive as a model.

    Barry-Wehmiller, Wikipedia, https://en.wikipedia.org/wiki/Barry-Wehmiller : the company's and Bob Chapman's "cultural transformation story was written about in" Leaders Eat Last.

  9. The real research name for people performing badly under internal threat is psychological safety, studied by Amy Edmondson.

    Edmondson, A. (1999). Psychological safety and learning behavior in work teams. Administrative Science Quarterly, 44(2), 350-383. DOI: 10.2307/2666999 . Not indexed in PubMed; checked on the publisher's page.

  10. Sustained camouflaging is associated with exhaustion and burnout in autistic adults.

    Hull, L., Petrides, K. V., Allison, C., Smith, P., Baron-Cohen, S., Lai, M.-C., & Mandy, W. (2017). "Putting on my best normal": Social camouflaging in adults with autism spectrum conditions. Journal of Autism and Developmental Disorders, 47(8), 2519-2534. PMID: 28527095. DOI: 10.1007/s10803-017-3166-5 . A qualitative study of 92 autistic adults; reported consequences of camouflaging included exhaustion.

    Raymaker, D. M., and colleagues (2020). "Having all of your internal resources exhausted beyond measure and being left with no clean-up crew": Defining autistic burnout. Autism in Adulthood, 2(2), 132-143. PMID: 32851204. DOI: 10.1089/aut.2019.0079 . A community based participatory thematic analysis of 19 interviews and 19 public internet sources; participants named unmasking as part of recovery, and the authors point to the dangers of teaching autistic people to mask.

  11. Generational differences in work attitudes are small or absent when studies are pooled.

    Costanza, D. P., Badger, J. M., Fraser, R. L., and colleagues (2012). Generational differences in work-related attitudes: A meta-analysis. Journal of Business and Psychology, 27, 375-394. DOI: 10.1007/s10869-012-9259-4 . Not indexed in PubMed; abstract read on the publisher's page.

  12. Complaints that the young are in decline recur in every generation.

    Protzko, J., & Schooler, J. W. (2019). Kids these days: Why the youth of today seem lacking. Science Advances, 5(10), eaav5916. PMID: 31663012. DOI: 10.1126/sciadv.aav5916 . Checked on PubMed 2026-10-09.

  13. The next book is Multipliers, by Liz Wiseman.

    Wiseman, L., with McKeown, G. (2010). Multipliers: How the Best Leaders Make Everyone Smarter. HarperBusiness. ISBN 9780061964398. Open Library record, https://openlibrary.org/isbn/9780061964398 .

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