Episode 38 · 26 minutes

Thinking in Bets: Making Smarter Decisions When You Don't Have All the Facts

by Annie Duke, 2018

A former poker professional argues that every decision is a bet, and that judging choices by how they turned out teaches the wrong lessons. The research on outcome bias and hindsight bias holds up well; the poker analogy travels less well, because most decisions at work never come with the odds. For neurodivergent leaders: judging the reasoning, written down before the result, is what separates a fair review from a lottery.

Transcript

The whole episode in text, 114 lines. Miles and Nora are synthetic voices reading a script approved by Logan Williamson, LPC.

Read the full transcript

Miles: The first of February, twenty fifteen. The Super Bowl, an average of a hundred and fourteen million people watching. Seattle is down four, on New England's one yard line. Second down, twenty six seconds, one timeout.

Miles: Everybody in the stadium is waiting for a handoff to the running back the whole league fears. Seattle throws instead. A cornerback named Malcolm Butler steps in front of the ball, and that's the game.

Miles: Before long the call has a title. The worst in Super Bowl history. Three years later a retired poker professional opens a book about deciding with that play, and her complaint is that almost nobody grading it was grading the call. They were grading the interception.

Miles: Today: Thinking in Bets, by Annie Duke. In two sentences: every decision is a wager on a future you can only partly see, so one bad ending says far less about a choice than it seems to. Judge the choice by what was knowable when it was made, which matters most to anybody whose results get read as a verdict on who they are.

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

Miles: Episode thirty eight, and you're listening to Sixty Books. I'm Miles. The arrangement holds: a single management book every time, sixty picked from a century of them, and the same pair of questions put to each. What does it offer people who lead, or report to, minds that run on a different plan. And what survives once AI is part of the ordinary working day. Nora brings the research, and today's author trained in it.

Miles: Nora, last time we left two books leaning on one assumption. Rumelt on strategy, Christensen on why strong companies stumble, and both taking it as given that a good call and a good outcome can be told apart.

Nora: And this book says that from the ending alone, mostly they can't. Christensen's publisher sums his firms up as doing everything right and still losing. On her terms that's no paradox at all, just a sound bet seen from the losing side.

Miles: So the ending is a poor witness.

Nora: A witness with one data point. And she'd know something about reading endings. She walked away from a doctorate in cognitive psychology a month before defending it, and finished it thirty two years later.

Miles: Thirty two years.

Nora: Yeah. Thirty two years. And by the logic of her own book, the fact that she finished tells you nothing about whether walking out was the right call at the time.

Miles: Give me the play the way she uses it.

Nora: Seattle trails twenty eight to twenty four, second and goal at the one. The call is a quick throw to a receiver cutting inside, and Butler reads it and takes the ball away.

Miles: And the verdict.

Nora: Fast and nearly unanimous. A senior writer at Sports Illustrated called it one of the worst calls in Super Bowl history, a Hall of Fame running back called it the worst in the history of the sport, and the league's own film unit later ranked it first among the worst plays ever.

Miles: So where does she come in?

Nora: With a number. She writes that over fifteen years of league data, a short pass from that spot was intercepted less than two percent of the time. And there's a clock reason: an incomplete pass stops the clock by itself, so Seattle could still hand off afterwards without burning its one timeout. Jim Harbaugh and Joe Namath were among those who defended it. Her point is that almost nobody was arguing about the call. An outcome she puts under two percent decided which story more than a hundred million viewers went home with.

Miles: And there's a name for that.

Nora: Borrowed from poker players. Resulting. Treating how a decision turned out as the measure of how good it was. The result arrives looking like a grade, and nobody checks whether the grade belongs to the choice or to the cards.

Miles: Now the author.

Nora: Annie Duke, born Anne Lederer in Concord, New Hampshire, in nineteen sixty five, to two parents who both played cards. Columbia, a double major in English and psychology. Then the University of Pennsylvania on a National Science Foundation fellowship, working on how young children learn language.

Miles: And then the month.

Nora: Nineteen ninety one. A month before her defense, she decides academic life isn't for her. Her brother is already a professional player, and the following year he sends her two thousand four hundred dollars and a stack of poker books.

Miles: How did that go?

Nora: Two decades among the world's top players, by her university's description. In two thousand four, a World Series of Poker bracelet, and that same year a tournament of champions that paid her two million dollars. In twenty ten she won a national heads up championship on network television, and she's still the only woman to have won it. She stepped back from professional play in twenty twelve.

Miles: And the books.

Nora: This one, February of twenty eighteen, from Portfolio, a business imprint at Penguin. Two hundred and eighty eight pages, a national bestseller on the publisher's account. Then How to Decide in twenty twenty and Quit in twenty twenty two. In twenty fourteen she co founded a nonprofit that brings decision education into middle and high schools. And the doctorate was completed five years after this book, so she wrote it trained in the field but without the letters. It leans on published research throughout, and it isn't itself research. That matters later.

Miles: The argument, in her order.

Nora: It starts in a taxi during the Second World War. John von Neumann, one of the mathematicians who built game theory, tells Jacob Bronowski that chess isn't a game. It's computation: every position has a right answer in principle. Real life, he says, is bluffing, and guessing what the other person thinks you'll do.

Miles: So life's the card table.

Nora: That's chapter one: life is poker, not chess. Two things decide how anything turns out, she says: the quality of your decisions and luck. In chess a loss means somebody made a mistake. In poker you can play a hand perfectly and lose, or badly and win. Working life sits on the poker side, and we keep grading it like chess.

Miles: And grading it like chess is resulting.

Nora: It is, and it has a partner: hindsight bias, the sense afterwards that the ending was obvious all along. She pictures the future as a tree with a lot of branches. Once one of them happens, we saw off the rest, and soon we can't remember they were ever there.

Miles: Chapter two.

Nora: Wanna Bet. Every belief is a bet, money or no money, and we place most of them badly because of how beliefs arrive. Here she draws on Daniel Gilbert: three experiments, published in nineteen ninety three. In two of them, people read about a criminal defendant, with some statements flagged as false. Under mental load, they believed the false statements anyway and let them sway their recommended prison terms.

Miles: Believe first, check later.

Nora: And if the checking gets interrupted, it never happens. Her prescription is cheap: put a number on your confidence. Not I'm sure, but I'm about seventy percent. And whenever you hear yourself certain, put the chapter title to yourself. Wanna bet?

Miles: Which must make for lively dinner parties.

Nora: She's clear it works as a question inside your own head, not a dare across the table. A bet makes you look at what you'd lose.

Miles: Chapter three.

Nora: Bet to Learn. Every outcome is feedback, but it has to be sorted first: my decision, or luck? She calls that fielding the outcome, and the sorting is rigged. We file our wins under skill and our losses under bad luck, and do the reverse for other people. That's self serving bias, and she spends a while on players who never improved because every loss went into the luck pile.

Miles: And the ones who did improve.

Nora: Did the opposite. Her example is the professional Phil Ivey, who wins a major tournament and spends the celebration dinner hunting through his own hands for the errors the win had covered up.

Miles: Chapter four.

Nora: The Buddy System. You can't sort alone, since the person grading your outcomes has the most riding on the answer. So she builds a small group with an explicit agreement: reward accuracy over agreement, hold each other to account, stay open to views that differ. The accountability piece comes from Jennifer Lerner and Philip Tetlock, a nineteen ninety nine review in Psychological Bulletin. It improves thinking only under narrow conditions: you learn before forming a view that you'll have to explain it, to somebody who cares about accuracy, knows the ground, and whose own opinion you don't know. Otherwise people mostly defend what they've said or drift toward what the listener wants. Keep the second name from that paper, by the way.

Miles: Chapter five.

Nora: Dissent to Win. She borrows four norms the sociologist Robert Merton described for science, spelled out as CUDOS. Share all the data, including what makes you look bad. Judge a claim on its evidence, not its source. Watch for conflicts of interest. And make doubt a habit of the whole group. As management, that's a team where I think you're wrong is the expected contribution.

Miles: And the last chapter.

Nora: Adventures in Mental Time Travel. The trouble she names is that the self deciding now isn't the self who lives with it. Then the tools. Ulysses contracts, after the sailor tied to the mast: commitments made calm that bind you when you're not. Ten ten ten, from the writer Suzy Welch: how will this feel in ten minutes, ten months, ten years. Tilt, the poker word for playing badly because the last hand stung. And backcasting and the premortem: imagine it succeeded, or failed, and work back to why.

Miles: We had the premortem with Kahneman, in episode twenty six, and he credited Gary Klein.

Nora: Same tool. What she adds is running it both ways and putting rough probabilities on the branches, so the plan carries its own odds.

Miles: Now the evidence. Start with the claim everything else sits on.

Nora: That people grade decisions by their outcomes, and it's the sturdiest thing in the book. Baron and Hershey, nineteen eighty eight, Journal of Personality and Social Psychology. Five studies. Undergraduates read about other people's decisions, medical choices and money gambles, with everything the decision maker knew laid out. When the outcome was good, they rated the thinking as better and the decision maker as more competent. Asked directly, they said outcomes shouldn't count. They counted them anyway.

Miles: Undergraduates in nineteen eighty eight. Still true?

Nora: It's been rerun. Aiyer, Feldman and colleagues, twenty twenty three, a preregistered replication of the first experiment, which had used twenty people. This time six hundred and ninety two adults online, each seeing one ending. The effect came back larger, from about three quarters of a standard deviation to a little over one, and held among people who'd said outcomes shouldn't matter.

Miles: And hindsight.

Nora: Fischhoff, nineteen seventy five. Readers got a short account of a real but obscure conflict, the British against the Gurkhas in eighteen fourteen. One group got no ending. Four groups were each told a different one. Whichever ending a group was told, it rated that ending as more likely than the others did, and the readers largely couldn't see they'd done it. A patient safety journal reprinted it in two thousand three as a classic.

Miles: And since then.

Nora: Guilbault and colleagues pooled ninety five studies in a two thousand four meta analysis. The average effect was about four tenths of a standard deviation: real and moderate. And smaller with real events or case histories than with trivia questions, which matters, because work is made of the first kind.

Miles: Does any of it show up outside a laboratory?

Nora: Three places. Nineteen ninety one, JAMA: a hundred and twelve practicing anesthesiologists rated the care in twenty one real cases that had gone badly. Each case was also rewritten with the opposite severity of harm and nothing else changed. Make the harm permanent instead of temporary, and ratings of appropriate care fell thirty one percentage points. Identical care. Then a twenty fifteen study of professional basketball: coaches change strategy more after a loss than a win, even a narrow loss that says almost nothing about the team. And the other football. Gauriot and Page took more than thirteen thousand shots that struck the post, about two thousand four hundred of which bounced in. Against near identical shots that bounced out, the scorers got higher match ratings from journalists and more playing time from their coaches in the next game.

Miles: Luck, paid out as skill.

Nora: About as close to a coin flip as the real world allows. So the first half of this book holds better than most of our shelf.

Miles: Then where does it slip?

Nora: In the poker. The deck is known, the odds can be worked out, and a serious player sees huge numbers of hands with feedback in minutes. Kahneman and Klein, American Psychologist, two thousand nine, set out when expert intuition can be trusted: a regular enough environment, and enough practice with clear feedback to learn it. Poker meets both. A reorganization, a hire or a product launch mostly meets neither.

Miles: So the two percent was a luxury.

Nora: Fifteen seasons of data on one situation. Most leaders never get a base rate for the decision in front of them, so telling luck from skill is far harder off the table than on it. And the two percent is her figure, from her account of league data. I couldn't check it independently, so hear it as hers.

Miles: And even on the table?

Nora: It takes volume. Steven Levitt and Thomas Miles studied the twenty ten World Series of Poker: seven hundred and twenty players flagged as highly skilled in advance, across fifty seven events, made back more than thirty percent on their entry fees on average, while everybody else lost about fifteen. Skill is real. But a German team put three hundred players through sixty hands each, experts and average players at the same tables, with the quality of each seat's cards fixed by design. The cards decided who left with money. Expertise showed mainly as losing less on bad hands.

Miles: So over a short run, luck takes it.

Nora: And one person's quarter is a short run. That cuts for the book's argument and against its favorite example at once: telling luck from skill takes repetitions that poker players get and most people deciding at work never do.

Miles: So, the tier statement for this one.

Nora: Thinking in Bets is practitioner literature, written for general readers by somebody trained in cognitive psychology, and it isn't peer reviewed research. The bias at its center is among the better replicated findings in that field, rerun as recently as twenty twenty three and found larger than first reported. The analogy it's built around travels less well than the cover suggests, because the card table hands you the odds and most of working life never does. Neither half of that is a remark about the author.

Miles: Our half.

Nora: It's in those field studies. A review that looks only at results is a draw: whoever's shot clipped the post and went in gets the better rating. Judging the process rather than the result is the difference between a fair review and a lottery. And I'll say plainly that what follows is my argument, built from that research, and not a finding about neurodivergent staff.

Miles: Why does it land harder on them?

Nora: Two steps, and only the second has evidence. First, when the result can't be trusted, reviewers fill the gap with impressions. Second, impressions are where some people lose before they've said a word. Sasson and colleagues, twenty seventeen, Scientific Reports, three studies. Observers watched brief clips of autistic and non autistic people in ordinary social situations. Within seconds their first impressions of the autistic participants were less favorable, and they were less willing to interact with them, for children and adults alike. Then the researchers gave observers only what was said, the words without the voice or the face, and the gap disappeared. The authors' reading: style, not substance, drove the impressions. Group findings, and not a description of anybody listening.

Miles: So a process review can go wrong as well.

Nora: Very easily, if process comes to mean how somebody came across in the meeting. It has to mean the reasoning: what was known, which options were on the table, what odds the person put on them, and why. On paper where possible, since on paper is where that gap closed.

Miles: And when do you collect the reasoning?

Nora: Before the result. That's Fischhoff turned into a practice. Once you know the ending you can't rebuild what you'd have thought without it, so the record has to exist first. Write the bet down when it's placed: the choice, the expected result, a rough percentage, and what would change your mind. Then the review compares the decision to the record, not the scoreboard.

Miles: And if nobody kept a record?

Nora: There's a repair with evidence behind it. Arkes and colleagues, nineteen eighty eight, Journal of Applied Psychology. A hundred and ninety four neuropsychologists answered a mailed case history, a man of fifty five with three possible diagnoses. Some were told which diagnosis was correct. Among those, fifty eight percent showed hindsight bias. Among those also asked to write down one piece of evidence for each of the three, forty one percent.

Miles: Not gone, then.

Nora: Yeah. Not gone, and clearly smaller, from a minute's work. So before anybody grades a bad outcome, they spend that minute arguing for the endings that didn't happen. And Lerner and Tetlock belong here: the person should know in advance that the review is of their reasoning, by someone who hasn't already decided.

Miles: Cautions.

Nora: Two. First, the one I owe every time: nobody has studied outcome bias in the reviews of neurodivergent employees. I've joined a literature on how evaluators treat luck to a literature on how observers treat style, and that join is mine, not the research's.

Miles: And the second.

Nora: Process review can fail the other way, and Duke names it herself: every loss filed under bad luck. A team that always concludes it made the right call and the dice were unkind has stopped learning. The record cuts both ways, which is what makes it fair.

Miles: Fair enough.

Miles: Sixty seconds, the way this show keeps them. Thinking in Bets says every decision is a bet on a future you can only partly see, that people grade those bets by how they landed, and that the grading is wrong often enough to cost you. For somebody leading a mind that runs on a different plan, or working inside one, this is Monday. Write the bet down before the result arrives: what you chose, what you expected, roughly how sure you were. Review people against that record and not against the scoreboard, because the scoreboard counts the shots that hit the post. Before reviewing a bad outcome, make the case for the endings that never came. Read reasoning on paper where you can, since that's where style stopped counting against substance. And hold good results to the same standard, so luck doesn't get promoted either.

Miles: The machines, then.

Nora: The standing caution on this whole class of tool runs after the close, in fixed wording, so I'll leave it there and stay with what Duke hands us.

Miles: Go on.

Nora: The bet record first. Everything in our half depends on writing the decision down before the result, and that's the step people skip because it's tedious. A tool can interview you for five minutes and turn the answers into a dated page: options, expectation, percentage, what would change your mind. The habit gets close to free.

Miles: And when the review comes round.

Nora: Give it the record without the outcome and ask it to grade the reasoning. Grade it yourself too, and only then open the result. Whatever you let the tool read, assume it uses. If the ending is in the file, it's in the grade.

Miles: And the buddy system?

Nora: That's where it needs handling. A study posted in twenty twenty three tested five widely used assistants across several writing tasks and found they tend to echo whatever view the user has stated, which the field calls sycophancy. That's the reverse of a truthseeking group.

Miles: So you don't ask it whether you're right.

Nora: You tell it you're seventy percent sure, and you ask for the strongest case for the other thirty. That's the Arkes repair, from something that never tires of being contrary. Same for the premortem: it can sketch the branches faster than a room can, and you supply the probabilities, because it has no base rate for your situation either.

Miles: Send us out.

Nora: With her two words. The tool will tell you yes all afternoon if you let it. The version worth having is the one you've told to look at your plan and ask you, wanna bet?

Miles: That's Thinking in Bets.

Miles: Next time: Superforecasting, by Philip Tetlock and Dan Gardner. If every decision is a bet, then some people ought to be measurably better at placing them, and that book goes looking for who they are.

Nora: The accountability researcher from chapter four, keeping score this time.

Miles: That one paid off, Nora. Thanks.

Nora: Always worth it.

Miles: Catch you next time.

Miles: Stoar Consulting and Coaching is where this show gets made. Logan Williamson is a Licensed Professional Counselor in Texas and Louisiana. What you heard was one book read with care, for leaders and for the people on their teams. None of it was coaching or counseling, and none of it was a verdict on anyone listening.

Nora: The sources for every claim are on the episode page, alongside the transcript. Another book lands in two days.

Miles: For the record, two points. These voices are synthetic. Miles and Nora aren't people, hold no license of any kind, and nothing in this episode was said about you. The scripts are drafted with AI assistance, then edited and approved by 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

Every claim in the episode, in the order it comes up, with where it comes from. 27 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. Super Bowl XLIX was played on 1 February 2015. Seattle trailed New England 28 to 24 and had second and goal at the New England one yard line with 26 seconds left and one timeout. Seattle passed; the throw to a receiver on a slant was intercepted by cornerback Malcolm Butler, which decided the game. The broadcast averaged 114.4 million viewers.

    Super Bowl XLIX, Wikipedia, https://en.wikipedia.org/wiki/Super_Bowl_XLIX , checked 2026-10-07: "February 1, 2015, University of Phoenix Stadium, Glendale, Arizona"; Lynch rushed to the 1-yard line "with 26 seconds remaining and one timeout left"; on second-and-goal Wilson threw to Lockette on a slant and Butler intercepted; average audience 114.4 million, peaking at 120.8 million.

  2. Duke opens Thinking in Bets with this play, and her complaint is that the call was judged by its outcome.

    Duke, A. "How to make the right decisions even when you don't have all the facts", annieduke.com, https://www.annieduke.com/how-to-make-the-right-decisions-even-when-you-dont-have-all-the-facts/ , which argues that "Pete's call wasn't a bad one based on the facts he had".

  3. Duke calls the habit of judging a decision by its outcome "resulting", a term from poker.

    Duke, A. (2018). Thinking in Bets: Making Smarter Decisions When You Don't Have All the Facts. Portfolio/Penguin. ISBN 9780735216358 (hardcover). Chapter 1. Confirmed in Graham Mann's book notes, https://www.grahammann.net/book-notes/thinking-in-bets-annie-duke ("the error of grading a decision only by how it turned out"), and in the SuperSummary chapter summary, https://www.supersummary.com/thinking-in-bets/summary/ .

  4. Duke left her doctoral programme in cognitive psychology in 1991, a month before defending her dissertation, and completed the PhD in 2023, thirty two years later.

    Annie Duke, Wikipedia, https://en.wikipedia.org/wiki/Annie_Duke , checked 2026-10-07: in 1991, "one month before defending her doctoral dissertation, she decided that she no longer wished to pursue a career in academia"; she returned and completed the PhD in June 2023.

    Wharton Executive Education faculty page, https://executiveeducation.wharton.upenn.edu/faculty/annie-duke-2/ : "In 2023, she completed her PhD in Cognitive Psychology."

    Biographical facts of public record. The arithmetic (1991 to 2023) is thirty two years.

  5. Thinking in Bets was published in February 2018 by Portfolio, a Penguin business imprint, at 288 pages, and described by the publisher as a national bestseller. Her later books are How to Decide (2020) and Quit (2022). In 2014 she co-founded a nonprofit that brings decision education to middle and high school students. Her PhD was completed in 2023, five years after the book.

    Annie Duke, Wikipedia, as in item 7, for How to Decide (2020) and Quit (2022).

  6. The book's chapters are: Life Is Poker, Not Chess; Wanna Bet?; Bet to Learn; The Buddy System; Dissent to Win; Adventures in Mental Time Travel.

    Duke (2018), as in item 5, table of contents. Confirmed in Graham Mann's book notes, as in item 5, which list the six chapter headings in this order.

  7. Chapter one opens with John von Neumann telling Jacob Bronowski, in a taxi during the Second World War, that chess is not a game but a well-defined form of computation in which every position has a right answer in principle, while real life consists of bluffing and of asking what the other person thinks you mean to do.

    Bronowski, J. (1973). The Ascent of Man. BBC Books. The passage, as quoted at Today in Science History, https://todayinsci.com/QuotationsCategories/G_Cat/GameTheory-Quotations.htm : "Chess is not a game. Chess is a well-defined form of computation. You may not be able to work out the answers, but in theory there must be a solution, a right procedure in any position. Now real games are not like that at all. Real life is not like that. Real life consists of bluffing, of little tactics of deception, of asking yourself what is the other man going to think I mean to do." The setting is recorded there as a taxi conversation during the Second World War.

    The same passage appears in Duke's book: Goodreads reader highlight, https://www.goodreads.com/notes/36146637-thinking-in-bets/112605218-enrico-bazzani/31bff64d-bba1-49c6-9b84-34e485327a38 , quoting "Chess is not a game. Chess is a well-defined form of computation."

  8. Duke writes that two things determine how our lives turn out: the quality of our decisions and luck. In chess, outcomes track decisions; in poker a well-played hand can lose and a badly played one can win.

    Duke (2018), as in item 5, chapter 1: "There are exactly two things that determine how our lives turn out: the quality of our decisions and luck", as quoted in the Bookful Bites summary, https://bookfulbites.com/2020/07/19/thinking-in-bets-making-smarter-decisions-when-you-dont-have-all-the-facts-by-annie-duke/ .

  9. The book pairs resulting with hindsight bias, and pictures the future as a tree whose unrealized branches are cut away once one outcome occurs.

    Duke (2018), as in item 5. Confirmed in the SuperSummary summary, as in item 5 ("She uses tree metaphors for time... As future becomes past, unmanifested branches sever, making outcomes appear inevitable"), and the Good Book Summary account, https://www.goodbooksummary.com/thinking-in-bets-making-smarter-decisions-when-you-dont-have-all-the-facts-book-summary .

  10. Chapter two argues that beliefs are bets, and draws on Daniel Gilbert's research showing people believe what they read by default and must expend effort to reject it. In three experiments published in 1993, participants exposed to statements flagged as false, about a criminal defendant in two of the experiments, believed and used the false information when under cognitive load, including in recommending prison terms.

    Gilbert, D. T., Tafarodi, R. W., & Malone, P. S. (1993). You can't not believe everything you read. Journal of Personality and Social Psychology, 65(2), 221-233. PMID: 8366418. DOI: 10.1037//0022-3514.65.2.221. Three experiments: participants were exposed to false information about a criminal defendant (Experiments 1 and 2) or a college student (Experiment 3), some under cognitive load (1 and 2) or time pressure (3); "Both load and time pressure caused Ss to believe the false information and to use it in making consequential decisions about the target", including sentencing decisions.

  11. Duke recommends stating beliefs with a confidence level, such as a percentage, and asking "Wanna bet?" as a check on certainty, which she presents as a question to put to oneself rather than a literal wager.

    Duke (2018), as in item 5, chapter 2: "When we express our beliefs, we should express a level of confidence as a percentage as well", as quoted in Graham Mann's notes, as in item 5.

  12. Chapter three: outcomes must be "fielded" as due to skill or luck; self-serving bias leads people to credit wins to skill and losses to luck, and to do the reverse for others; she describes players who failed to improve for this reason, and Phil Ivey reviewing his own play for errors at the dinner celebrating a tournament win.

    Duke (2018), as in item 5, chapter 3. Confirmed in two independent summaries: SuperSummary, as in item 5 ("Self-Serving Bias: Fritz Heider's concept shows people credit good outcomes to themselves while blaming bad ones on luck... Phil Ivey deconstructed every potential mistake during his tournament celebration dinner"), and Good Book Summary, as in item 15 ("Outcome fielding: separating luck from skill... Phil Ivey's practice of dissecting winning hands to identify hidden poor decisions").

  13. Chapter four builds a truthseeking group with an explicit charter, drawing on Lerner and Tetlock's 1999 review: accountability improves the quality of thinking chiefly when people learn before forming a view that they will have to explain it to an audience whose views are unknown, who is interested in accuracy and well informed; otherwise accountability tends to produce defence of prior positions or conformity to the audience.

    Lerner, J. S., & Tetlock, P. E. (1999). Accounting for the effects of accountability. Psychological Bulletin, 125(2), 255-275. PMID: 10087938. DOI: 10.1037/0033-2909.125.2.255. A narrative review of the experimental literature on accountability, addressing "under what conditions will accountability attenuate, have no effect on, or amplify cognitive biases".

    Duke (2018), chapter 4, quoting the review: "Complex and open-minded thought is most likely to be activated when decision makers learn prior to forming any opinions...", Goodreads, https://www.goodreads.com/quotes/11675766-lerner-and-tetlock-offer-insight-into-what-should-be-included .

    Exploratory thought, Wikipedia, https://en.wikipedia.org/wiki/Exploratory_thought , summarising the review's conditions: people engage in exploratory thought when they know in advance that they will have to explain themselves to well-informed external parties who care about the truth and whose views they do not already know, and otherwise default to confirmatory reasoning.

  14. Chapter five borrows the sociologist Robert Merton's norms of science, abbreviated CUDOS: communism (sharing data), universalism (judging claims by evidence rather than source), disinterestedness (vigilance about conflicts of interest) and organized skepticism.

    Duke (2018), as in item 5, chapter 5. Confirmed in SuperSummary and Good Book Summary, as in items 5 and 15.

    Merton, R. K. (1942). A note on science and democracy. Journal of Legal and Political Sociology, 1, 115-126; reprinted as "The normative structure of science" in Merton, R. K. (1973), The Sociology of Science, University of Chicago Press.

  15. Chapter six covers mental time travel: Ulysses contracts (precommitments), Suzy Welch's 10-10-10 (consequences at ten minutes, ten months and ten years), tilt (decisions degraded by a recent bad result), backcasting and premortems, and attaching probabilities to scenarios.

    Duke (2018), as in item 5, chapter 6. Confirmed in SuperSummary (Ulysses contracts, tilt, scenario planning with probability estimates, backcasting, premortems) and Good Book Summary ("10-10-10 framework (Suzy Welch adaptation)", backcasting, premortems, tilt), as in items 5 and 15.

  16. Baron and Hershey (1988): in five studies, undergraduates rated decisions made by others under uncertainty (medical decisions and monetary gambles), with all the information the decision maker had. They rated the thinking as better and the decision maker as more competent when the outcome was favourable. Asked, they said outcomes should not be considered; they considered them anyway.

    Baron, J., & Hershey, J. C. (1988). Outcome bias in decision evaluation. Journal of Personality and Social Psychology, 54(4), 569-579. PMID: 3367280. DOI: 10.1037//0022-3514.54.4.569. Five studies with undergraduate participants; "Subjects rated the thinking as better, rated the decision maker as more competent, or indicated greater willingness to yield the decision when the outcome was favorable... Although subjects who were asked felt that they should not consider outcomes in making these evaluations, they did so."

  17. A preregistered replication of Baron and Hershey's Experiment 1 (original n = 20, within-participants) in 2023 used 692 online adults in a between-participants design. The bias replicated with larger effects (d = 0.77 to 1.1, against the original's 0.21 to 0.53), and appeared among participants who said outcomes should not be considered (d = 0.64).

    Aiyer, S., Kam, H. C., Ng, K. Y., Young, N. A., Shi, J., & Feldman, G. (2023). Outcomes affect evaluations of decision quality: Replication and extensions of Baron and Hershey's (1988) outcome bias Experiment 1. International Review of Social Psychology, 36, 12. PMID: 40951810. PMC: PMC12372742. DOI: 10.5334/irsp.751. Pre-registered replication, Amazon Mechanical Turk via CloudResearch, N = 692, medical scenarios; "original: d = 0.21 - 0.53; replication: d = 0.77 [0.62, 0.93] to 1.1 [0.94, 1.26]"; among participants who stated outcomes should not be considered, d = 0.64 [0.21, 1.08].

  18. Fischhoff (1975): readers were given a short account of the 1814 conflict between the British and the Gurkhas; one group received no outcome and four groups were each told a different outcome. Each group told an outcome rated that outcome as more likely than the other groups did, and readers were largely unaware of the effect. The paper was reprinted in a patient safety journal in 2003.

    Fischhoff, B. (1975). Hindsight is not equal to foresight: The effect of outcome knowledge on judgment under uncertainty. Journal of Experimental Psychology: Human Perception and Performance, 1(3), 288-299. DOI: 10.1037/0096-1523.1.3.288.

    Reprint: Fischhoff, B. (2003). Hindsight not equal to foresight: the effect of outcome knowledge on judgment under uncertainty. 1975. Quality & Safety in Health Care, 12(4), 304-311. PMID: 12897366. PMC: PMC1743746. DOI: 10.1136/qhc.12.4.304. Abstract: outcome knowledge "was found to increase the postdicted likelihood of reported events... Judges were, however, largely unaware of the effect that outcome knowledge had on their perceptions." Indexed by PubMed as a "Seminal Article".

    Fischhoff, B. (1974). Hindsight: Thinking backward? Oregon Research Institute and Hebrew University of Jerusalem technical report, https://apps.dtic.mil/sti/pdfs/ADA001807.pdf , describing the British-Gurkha passage, "Five groups of subjects", one foresight group and four hindsight groups each given one of four outcomes (British victory, Gurkha victory, stalemate with a peace treaty, stalemate without one).

  19. A 2004 meta-analysis pooled 95 studies (252 effect sizes): mean effect about d = 0.39 (95% CI 0.36 to 0.42), with larger effects for almanac (trivia) questions than for real-world events or case histories.

    Guilbault, R. L., Bryant, F. B., Brockway, J. H., & Posavac, E. J. (2004). A meta-analysis of research on hindsight bias. Basic and Applied Social Psychology, 26(2-3), 103-117. DOI: 10.1080/01973533.2004.9646399. Abstract (via the OpenAlex record, https://api.openalex.org/works/doi:10.1080/01973533.2004.9646399 ): "A total of 95 studies (83 published and 12 unpublished) were included, and 252 independent effect sizes were coded... the overall mean effect size was Md = .39 with a 95% confidence interval .36 to .42... effect sizes that used almanac questions were larger than those using real-world events or case histories."

  20. In 1991, 112 practicing anesthesiologists judged the appropriateness of care in 21 cases with adverse outcomes; each case was paired with an otherwise identical version whose outcome severity was reversed. Changing the outcome from temporary to permanent reduced ratings of appropriate care by 31 percentage points.

    Caplan, R. A., Posner, K. L., & Cheney, F. W. (1991). Effect of outcome on physician judgments of appropriateness of care. JAMA, 265(15), 1957-1960. PMID: 2008024. "We asked 112 practicing anesthesiologists to judge the appropriateness of care in 21 cases involving adverse anesthetic outcomes... the proportion of ratings for appropriate care decreased by 31 percentage points when the outcome was changed from temporary to permanent and increased by 28 percentage points when the outcome was changed from permanent to temporary." Inverse relationship in 15 of 21 matched pairs.

  21. Professional basketball coaches revise strategy more after a loss than after a win, even narrow losses that are uninformative about team quality, and even when a loss was expected.

    Lefgren, L., Platt, B. C., & Price, J. (2015). Sticking with what (barely) worked: A test of outcome bias. Management Science, 61(5), 1121-1136. DOI: 10.1287/mnsc.2014.1966. Abstract (BYU ScholarsArchive, https://scholarsarchive.byu.edu/facpub/5785 ): coaches "are more likely to revise their strategy after a loss than a win, even for narrow losses, which are uninformative about team effectiveness. This increased strategy revision following a loss occurs even when a loss was expected and even when failure is due to factors beyond the team's control."

  22. Gauriot and Page studied more than 13,000 football (soccer) shots that hit the post: 2,387 went in and 10,679 bounced out. Comparing scoring and non-scoring shots from similar locations, scorers received higher match ratings from journalists and more playing time from their coaches in the following match.

    Gauriot, R., & Page, L. (2019). Fooled by performance randomness: Overrewarding luck. The Review of Economics and Statistics, 101(4), 658-666. RePEc record, https://ideas.repec.org/a/tpr/restat/v101y2019i4p658-666.html : "we use high-quality data on football (soccer) matches and select shots on goal that landed on the goal posts... We find clear evidence that luck is overly influencing managers' decisions and evaluators' ratings." DOI not confirmed on 2026-10-07 (the resolver was rate-limited); cited by volume and pages.

    The authors' own account, The Conversation, https://theconversation.com/skill-vs-luck-who-really-deserves-the-rewards-from-success-99766 : "more than 13,000 shots that hit a post - in 10,679 cases the ball bounced away, but in 2,387 cases it deflected into the goal", matched within 45 cm; match ratings by sports journalists; "more playing time in their next match".

  23. Kahneman and Klein (2009): expert intuition can be trusted only where the environment is regular enough to be learned and the person has had adequate opportunity, with feedback, to learn it; subjective confidence is not a reliable guide.

    Kahneman, D., & Klein, G. (2009). Conditions for intuitive expertise: a failure to disagree. American Psychologist, 64(6), 515-526. PMID: 19739881. DOI: 10.1037/a0016755. "Evaluating the likely quality of an intuitive judgment requires an assessment of the predictability of the environment in which the judgment is made and of the individual's opportunity to learn the regularities of that environment."

  24. Meyer and colleagues (2013): 300 participants (150 fixed-limit, 150 no-limit) played 60 computer-based hands of Texas Hold'em for money at six-player tables of three experts and three average players, with card quality manipulated by design. Experts did not finish with more money than average players; card distribution was the decisive factor; experts lost less when dealt worse-than-average cards.

    Meyer, G., von Meduna, M., Brosowski, T., & Hayer, T. (2013). Is poker a game of skill or chance? A quasi-experimental study. Journal of Gambling Studies, 29(3), 535-550. PMID: 22892961. DOI: 10.1007/s10899-012-9327-8. University of Bremen. "Experts did not outperform average players in terms of final cash balance. Rather, card distribution was the decisive factor... However, expert players were better able to minimize losses when confronted with disadvantageous conditions."

  25. Sasson and colleagues (2017), three studies: first impressions of autistic people formed by typically developing observers from brief "thin slices" of real-world social behaviour were less favourable and accompanied by reduced intentions to interact; the effect occurred within seconds and held for child and adult groups; it disappeared when impressions were based on conversational content without audio-visual cues. The authors conclude that "style, not substance, drives negative impressions".

    Sasson, N. J., Faso, D. J., Nugent, J., Lovell, S., Kennedy, D. P., & Grossman, R. B. (2017). Neurotypical peers are less willing to interact with those with autism based on thin slice judgments. Scientific Reports, 7, 40700. PMID: 28145411. PMC: PMC5286449. DOI: 10.1038/srep40700.

  26. Arkes and colleagues (1988): 480 neuropsychologists were sent a case history of a 55-year-old man with three possible diagnoses; 194 returned it. Of 72 respondents told which diagnosis was correct, 42 (58 percent) showed hindsight bias; of 68 who were told the diagnosis and also asked to write one piece of supporting evidence for each diagnosis, 28 (41 percent) did.

    Arkes, H. R., Faust, D., Guilmette, T. J., & Hart, K. (1988). Eliminating the hindsight bias. Journal of Applied Psychology, 73(2), 305-307. DOI: 10.1037/0021-9010.73.2.305. Full text checked at https://www.gwern.net/doc/psychology/cognitive-bias/sunk-cost/1988-arkes.pdf : "A total of 480 psychologists were randomly selected... Completed questionnaires were returned by 194 (40%)"; "Of 72 hindsight subjects, 42 (58%) gave a higher probability estimate to the correct diagnosis than the corresponding estimate obtained from the foresight group. Only 28 of 68 hindsight-reasons subjects (41%) gave a higher probability estimate."

  27. A 2023 study tested five state-of-the-art AI assistants across several free-form text-generation tasks and found they consistently tend to give responses matching the user's stated views, a behaviour the authors call sycophancy.

    Sharma, M., Tong, M., Korbak, T., Duvenaud, D., Askell, A., Bowman, S. R., et al. (2023). Towards understanding sycophancy in language models. arXiv:2310.13548 (v1 20 October 2023; v4 10 May 2025). https://arxiv.org/abs/2310.13548 . "five state-of-the-art AI assistants consistently exhibit sycophancy across four varied free-form text-generation tasks"; also an analysis of human preference data.

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