Thinking in Bets: Annie Duke on Making Smarter Decisions with Less Data

Chess vs. Poker: The Nature of Real-World Decisions

Most people approach life decisions like a game of Chess. In chess, there is no hidden information and zero luck. All thirty-two pieces are visible on the board.

If you make a bad move and lose your queen, it is 100% your fault. If you lose the match, you played worse than your opponent. In her bestselling masterclass Thinking in Bets: Making Smarter Decisions When You Don’t Have All the Facts, World Series of Poker champion and cognitive psychologist Annie Duke reveals that real life is not chess; real life is poker.

In poker, you hold incomplete information (you cannot see your opponents’ cards). There is an element of pure luck (the next card dealt from the deck). You can make a mathematically brilliant move and still lose money on a bad river card.

Or you can make a foolish, reckless play and get lucky. When you learn to think in bets, you stop beating yourself up over bad luck and master the art of long-term probability.

The Dangerous Trap of ‘Resulting’

Duke identifies the single greatest cognitive bias in human decision-making: Resulting (Outcome Bias). Resulting is our tendency to judge the quality of a decision strictly by its eventual outcome:

• If a CEO makes a reckless, un-researched acquisition and gets lucky, everyone calls them a visionary genius.
• If a doctor chooses the safest, most evidence-backed surgery and a rare complication occurs, people blame the doctor for making a “bad decision.”

Resulting creates terrible habits. When you get a lucky outcome from a foolish gamble, resulting reinforces bad behavior. A great decision is one that follows a rigorous, logical process based on the best available probabilities at the time the choice was made.

How to Shift from 100% Certainty to Probabilistic Bets

Most people view beliefs in black-and-white absolutes: “This stock will go up,” “This marketing campaign is definitely going to work,” or “He is completely wrong.” When you treat beliefs as 100% certain, being contradicted feels like an attack on your ego. Duke suggests expressing beliefs in percentages of confidence: > “I am about 70% confident that this strategy will increase our sales.” Expressing confidence as a probability transforms your psychology:

• It admits that 30% of the time, the strategy will fail.
• It invites collaborative feedback from your team without defensiveness.
• It keeps you open to updating your beliefs when new evidence arrives.

4 Tools to Improve Your Everyday Decision Odds

1. The ‘Wanna Bet?’ Truth Test

Whenever you catch yourself making a confident assertion (“Electric vehicles will dominate 90% of the market in three years”), ask yourself: “Would I bet $1,000 of my own cash on that statement right now?” Putting an imaginary wager on your belief instantly forces your brain to examine the evidence objectively.

2. Backcasting and Pre-Mortems

• Backcasting: Imagine you achieved your 12-month goal. Work backward step-by-step to map the positive actions that made it happen.
• Pre-Mortem: Imagine your project suffered a catastrophic failure 12 months from now. Ask: “What went wrong?” Identifying failure points in advance allows you to build preventative safeguards today.

3. Setting Clear ‘Kill Criteria’

Before entering a new business venture or investment, establish objective exit rules: “If customer acquisition cost exceeds $40 for three straight months, we will shut down this campaign.” Deciding exit criteria in advance prevents emotional sunk-cost traps.

4. Form a Decision Pod

Partner with two or three truth-seeking colleagues who agree to challenge your assumptions without taking disagreement personally.

Annie Duke on the Power of the ’10-10-10 Rule’ in Decision Making

When facing an emotionally charged decision, our brain’s emotional amygdala hijacks logic. To restore perspective, Annie Duke recommends the 10-10-10 Rule (developed by Suzy Welch):

• How will I feel about this choice 10 minutes from now?
• How will I feel about this choice 10 months from now?
• How will I feel about this choice 10 years from now?

This simple temporal shift expands your decision horizon, preventing short-term emotional panic from destroying long-term compound growth.

3 Daily Habits to Master Probabilistic Thinking

1. Audit Bad Breaks vs. Dumb Luck: When a good outcome happens, ask: “How much of this was luck versus solid process?”
2. Embrace ‘I Don’t Know’: Treat admitting uncertainty as a badge of intellectual strength rather than ignorance.
3. Reward Good Decision Processes: In team meetings, praise employees who followed a rigorous evaluation process even if the result was unlucky.

Summary of Thinking in Bets Principles

• Treat life choices as wagers made under incomplete information and luck.
• Separate decision quality from outcome quality to avoid resulting bias.
• Express beliefs in percentages of confidence to invite continuous learning.

Frequently Asked Questions