#sunkcostfallacy — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #sunkcostfallacy, aggregated by home.social.
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Book Review: Quit by Annie Duke
Most of us were raised on the same lesson: winners never quit, and quitters never win. It sounds like wisdom, but according to Annie Duke, it might be one of the most financially and personally damaging beliefs we carry. In Quit: The Power of Knowing When to Walk Away, Duke argues that knowing when to stop is not a character flaw. It is a skill, and learning it could change your life.
Brief Book Summary
Published in 2022, Quit makes a case that quitting, done well and at the right time, is one of the most rational decisions a person can make. Duke walks readers through the psychological forces that keep people locked into failing courses of action, from bad investments to dead-end careers, and explains why our brains are wired to resist giving up even when logic says we should.
The book draws on behavioral economics, cognitive psychology, and real-world case studies to explain the costs of persisting too long. Duke introduces concepts like “the grit trap,” the danger of sunken costs, and identity-based commitment, all of which cause people to keep going when stopping would have been the smarter move. She also offers practical tools for making better quitting decisions, including the use of “quitting coaches” and pre-committed decision criteria.
Who Is Annie Duke?
Annie Duke is a former professional poker player who competed at the World Series of Poker for nearly two decades, winning a World Series of Poker bracelet in 2004 and the Tournament of Champions in 2004. After retiring from poker, she became a consultant, speaker, and author focused on decision-making under uncertainty.
Her first book, Thinking in Bets, introduced many readers to the idea that good decisions do not always lead to good outcomes, and that separating decision quality from outcome quality is a critical mental skill. Quit builds on that framework by applying it specifically to the decision to walk away.
Duke holds a bachelor’s degree from Columbia University and completed graduate coursework in cognitive psychology at the University of Pennsylvania before leaving to pursue poker professionally. That academic background in how humans think and decide runs throughout her writing.
Lessons Readers Can Take Away
Sunk costs are a trap
One of the most valuable lessons in the book is a deeper understanding of the sunk cost fallacy. Money already spent, time already invested, and effort already committed are gone regardless of what you do next. Making future decisions based on past losses is irrational, yet nearly everyone does it. For personal finance readers, this lesson applies directly to holding onto a bad investment, continuing to fund a failing side business, or staying loyal to a financial product that no longer serves you.
Grit has limits
Duke is careful not to dismiss perseverance entirely, but she draws an important distinction between grit in service of a worthy goal versus grit as stubbornness. Persistence only pays off when the underlying path is sound. Sticking with a bad plan longer does not make it a good plan.
Identity makes quitting harder
When we tie who we are to what we are doing, walking away feels like a personal failure rather than a rational adjustment. Duke explores how this plays out in careers, relationships, and financial commitments. For anyone who has ever said “I’ve come too far to stop now,” this chapter is worth the price of the book alone.
Pre-commitment and decision criteria help
Duke recommends deciding in advance under what conditions you will quit, before emotions take over. In investing, this resembles a pre-set stop-loss rule or a rebalancing threshold. Setting the criteria when you are calm and objective is far more reliable than making the call in the heat of the moment.
Getting outside perspective matters
Duke suggests using a trusted outside party, someone not emotionally invested in your outcome, to help evaluate when it is time to walk away. For financial decisions, this is an argument for working with a financial advisor or a trusted, knowledgeable friend who can offer honest feedback rather than reinforcement.
Criticisms of the Book
No book is without weaknesses, and Quit has a few worth noting.
Some readers and critics have pointed out that Duke’s examples lean heavily on high-stakes, dramatic scenarios, from elite athletes to military operations, which can make the framework feel harder to apply to ordinary, everyday decisions. Not every reader is managing a multi-million dollar fund or competing at a world-class level.
Others have argued that the book is somewhat repetitive, making the same core arguments across multiple chapters without adding significant new depth in each one. The central thesis is compelling, but readers looking for dense, technical analysis may find the pacing slow.
There is also a fair criticism that the book does not spend enough time addressing the real-world constraints that make quitting genuinely hard for many people. Walking away from a bad job is easier when you have an emergency fund. Exiting a bad investment is easier when you have other capital. Duke acknowledges this to some degree, but critics have noted that the book occasionally underweights financial and social barriers that make rational quitting harder in practice.
Should You Buy This Book?
Yes, with a caveat about your expectations.
If you are looking for a book that will make you a more thoughtful decision-maker, especially around when to stay committed to something and when to cut your losses, Quit delivers. The core ideas are sound, well-researched, and practically useful. For anyone managing a personal investment portfolio, building a side business, or navigating a career change, the mental models Duke provides are worth internalizing.
If you are looking for a detailed how-to guide with step-by-step instructions, the book may leave you wanting more. It is better described as a framework-builder than a tactical manual.
Readers who enjoyed Thinking in Bets will likely find Quit a natural and worthwhile companion. Readers new to behavioral economics and decision-making will also find it accessible and engaging. It is not the most advanced book in this space, but it does not need to be.
Final Thoughts
The idea that quitting is always weakness is a belief worth examining. Quit: The Power of Knowing When to Walk Away gives readers the language and the logic to challenge that assumption and make better decisions as a result.
In personal finance, some of the most costly mistakes are not bad purchases or bad investments. They are the failure to recognize when something has stopped working and the reluctance to act on that recognition. Duke’s book is a useful antidote to that pattern.
It is not a perfect book, but the core argument is one that more people need to hear. If the idea of losing money on a stock you refuse to sell because you have already lost too much sounds familiar, start here.
#AnnieDuke #BookReviews #Books #DecisionMaking #Nonfiction #Psychology #Quit #SunkCostFallacy #ThinkingInBets -
Competitive disadvantage
The best time to switch was yesterday. The second best time is today.
Make the switch: https://massaxis.com
#SwitchingCosts #SunkCostFallacy #MoveForward #BusinessDecisions #CutYourLosses #BetterChoices #ProgressNotPerfection #CourageToChange #SmartMoves #NoRegrets -
Spiritual Bypassing isn't the real problem. The real problem? People want it that way.
30 years of meditation is boring. A 30-day "transformation" feels good. So we pay gurus to sell us identity – not insight.
Meanwhile, attention spans dropped to 8 seconds. Goldfish: 9 seconds. We lose.
The Bullshit Mountain is where you feel enlightened without doing the work. The valley below? Slow, real learning. No likes. No shortcuts.
Just a book. A mat. Years.
Step off the mountain. Walk through the dark valley. Learn slowly. Smile.
Not because it's easy. But because you finally started.
Full German madness here: https://mahamind7.blogspot.com/2026/04/spiritual-bypassing-und-was-das.html
#BullshitMountain #SpiritualBypassing #AttentionEconomy #SlowLearning #NoGurus #DigitalDetox #LifelongLearning #EsotericCritique #DunningKruger #SunkCostFallacy
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I spent the whole day working on my long abused and neglected Jeep Scrambler, but I did take a break for a root canal.
(I have neither abused nor neglected it, but in the past 43 years it has suffered much).
Yay Team #SunkCostFallacy -
#Sunkcostfallacy ~ some relationships are not worth working on. No matter how much has been invested previously. Turn around and walk away. In all likelihood, it will eventually contribute to your peace of mind.
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James Mellor, “4th Anniversary”, 24 February 2026 ⦾ https://www.cartoonmovement.com/cartoon/4th-anniversary ⦾ https://www.jamesmellorcreative.com/james-mellor-gallery/ #JamesMellor #JamesDFMellor #cartoons #war #Russianagression #Putin #militarism #sunkcostfallacy #congratulations #2020s @[email protected]
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No, absolutely not. We must honor the #SunkCostFallacy approach to cost overruns and repeated delays.
Otherwise, we might embarrass the politicians and corporate management that advocated so powerfully and successfully for these ill-advised projects.
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jetzt habe ich es kapiert was oft das problem in meiner abteilung ist: sunk cost fallacy - die investment-falle, wir haben 2-3 Monolith Lösungen in der Abteilungen die ordentlich entwirrt gehören. aber was macht man: man baut noch eine schaltfläche ein, und noch eine. meine prophezeiungen irgenwann kollapiert es, werden gehört aber nicht ernstgenommen. es ist ein psychologische sache im kopf #sunkcostfallacy 1/x
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@tastapod No. Nonononono.
What I am trying (and obviously failing) to say is that the team has already chosen not to change the name, even though some members seemed to think it was a good idea, because over 3 years ago they thought "The more time that passes with the Jujutsu name, the more likely it is that we'll keep it", because "there is plenty of third-party writing about it. It would be a shame to lose that connection while the underlying model is the same." - i.e. #SunkCostFallacy
I made no judgement on their choice of candidate for the name change, merely pointed out that the conversation and decision about renaming had already happened. -
At this point, AI is a #sunkcostfallacy. These companies have already invested Billions into it, so therefore they must continue to invest into it despite it still returning absolutely no positive revenue due to costs.
Instead of cutting their losses, they're instead burning money. :blobfoxangry:
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Vreemd genoeg heeft niemand het over het toerisme (in Gelderland bijna 68000 banen) dat er last van gaan krijgen als de rust wordt verstoord door laagvliegers.
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"#Russia seizes $50 billion in assets as #economy shifts during war in #Ukraine, research shows"
Russia's economy is in trouble
#Putin cannot reassess. He is stuck
#SunkCostFallacy has him staring into the abyss of economic destitution and the political fallout
The profound mistake of Russia's #ethnofascist #imperialism compounds daily with extraordinarily debilitating implications for the future of Russia
A wish:
That Putin lives long enough to reap what he sows
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This is shockingly on point for being filmed a year ago.
#uspol #iran #war #trap #itsatrap #israel #saudiarabia #russia #gametheory #hubris #sunkcostfallacy #history
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Ever watched a colleague cling to a failing strategy like it's a badge of honour? But in business, as in probability, sticking to your first instinct isn't always smart—it's often a trap. 🎲 Enter the Monty Hall paradox, a powerful metaphor for organisational leadership.
https://robert.winter.ink/why-great-managers-know-when-to-switch-doors/
#Management #Leadership #DecisionMaking #Strategy #BusinessEthics #MontyHall #RationalThinking #SunkCostFallacy
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Ever watched a colleague cling to a failing strategy like it's a badge of honour? But in business, as in probability, sticking to your first instinct isn't always smart—it's often a trap. 🎲 Enter the Monty Hall paradox, a powerful metaphor for organisational leadership.
https://robert.winter.ink/why-great-managers-know-when-to-switch-doors/
#Management #Leadership #DecisionMaking #Strategy #BusinessEthics #MontyHall #RationalThinking #SunkCostFallacy
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Ever watched a colleague cling to a failing strategy like it's a badge of honour? But in business, as in probability, sticking to your first instinct isn't always smart—it's often a trap. 🎲 Enter the Monty Hall paradox, a powerful metaphor for organisational leadership.
https://robert.winter.ink/why-great-managers-know-when-to-switch-doors/
#Management #Leadership #DecisionMaking #Strategy #BusinessEthics #MontyHall #RationalThinking #SunkCostFallacy
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@alisynthesis @anon_opin By the time I figured out that it had become something I wouldn't have applied to I was halfway through and I didn't want to walk away from the money I'd already spent.
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Bei der Versunkene-Kosten-Falle #SunkCostFallacy investieren wir weiter Zeit oder Geld, weil wir bereits Ressourcen aufgewendet haben – auch wenn das nicht mehr sinnvoll ist.
Beispiel:
💸 „Ich habe schon 50 Seiten gelesen, also lese ich das Buch zu Ende – auch wenn es langweilig ist.“
💸 „Wir haben schon viel Geld investiert, also sollten wir das Projekt durchziehen – auch wenn es nicht erfolgversprechend ist.“👉 Tipp: Entscheide rational, ob sich weiteres Investieren wirklich lohnt!
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So called #AI is not "just a tool".
It's a series of processes, heavily curated by humans every step of the way, to create the #illusion of a machine generating an #illusion of a statement,
consuming insane amounts of resources, leading to justifications that it all may be worth it some day, leading to further sacrifices to this illusionary #god because #sunkCostFallacy dictates the managers can't admit that it was all a hoax. It must consume more, more, more.
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#SunkCostFallacy
https://bsky.brid.gy/r/https://bsky.app/profile/did:plc:ny5w2k6brb2kdubxnevke6li/post/3lfgzzpw3qk2x
[email protected] - Attention cities & states — remember this as you reconsider EVERY single massively expensive freeway and road widening project you’ve been working on for years, but very likely need to cancel in light of the #CimateEmergency, and the fact that they don’t actually work. #inducedTraffic #ClimateCrisis -
Aha. X hebt also die Blockierfunktion auf. Ganz ehrlich? So what? X ist so relevant wie irgendein Dackelzüchterforum in Hintertupfingen. Wer noch immer dort ist, hat mittlerweile dermaßen viel Auswahl an Alternativen, dass es einfach absolut keinen rationalen Grund mehr gibt, noch dort zu sein. Jegliches Argument ist emotional getrieben durch "aber wir sind schon so lange dort" oder "aber all die Leute dort" oder ähnliches. Und nein, "Reichweite" ist absolut kein Argument. #SunkCostFallacy
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A new thinkpiece on Policy Consequences of the New Neuroeconomics Framework.
We argue that #neuroscience provides a framework to build new models in #microeconomics with actual #policy consequences.
#addiction #ContingencyManagement
#microfinance #SunkCostFallacy #BehavioralEconomics #NeuroeconomicsA.D. Redish, H.S. Chastain, C.F. Runge, B.M. Sweis, S.E. Allen, A. Haldar (2024) Policy consequences of the new neuroeconomic framework. #arXiv unreviewed preprint.
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"We've got a fuzz box" vibes here from Caroline Douglass, the agency’s executive director for flood and coastal risk management:
“because, the point is, we have the technology and we do need to use it”.
#SunkCostFallacy -
Just because I put in several hundred bucks into a game, doesn't mean I won't drop it if I no longer play/care about it.
It is a *video game*, not a pet or loved one, for the love of crinkle cut chips.
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Is there any #SunkCostFallacy discourse on here about ‘wasting’ your degree?
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That priceless moment when you wonder:
A) is it easier to fix the local git mess you've made
B) Just start over in a fresh local copy#SoftwareDevelopment #git #WebDevelopment #ux #dx #SunkCost #WebDev #SunkCostFallacy