Thinking & Decisions
Evidence-based thinking & decisions practices.
54 concepts in this area — each broken into concrete practices with the real mechanism, an honest read on the evidence, and how to practice it with IX Coach.
- Ambiguity Aversion — Why Unknown Odds Feel Worse Than Bad Odds
The psychology of the unknown odds — and how to stop letting unfamiliarity masquerade as danger
- Attribute Substitution: When Your Brain Answers a Different Question
The invisible question-swap behind most cognitive biases — and how to intercept it
- Availability Cascades: How Fears Spread and Inflate
How social repetition inflates perceived risk — and how to recalibrate
- Base-Rate Neglect: Why We Ignore the Odds
How to let prior probabilities do their real work in your decisions
- Bayesian Thinking: How to Update Beliefs Rationally
Holding beliefs as probabilities and updating them when evidence arrives
- Calibration Training
Building the feedback loop between confidence and accuracy
- Choice Overload, Made Practical
Why more options backfire and how to make decisions you can live with
- Circle of Competence
Know what you know, know what you do not know, and act accordingly
- Confirmation Bias: Seeing What You Expect to See
The most pervasive cognitive bias and the practices that actually chip away at it
- Decision Journaling: Learning to Decide Better Over Time
How to build a personal feedback loop for the decisions that actually matter
- Expected Value Thinking: Deciding Under Uncertainty
The math of rational choice under uncertainty, its real limits, and how to use it anyway
- Fermi Estimation
Order-of-magnitude reasoning: how to get usably close to the truth without having all the data
- Hanlon's Razor: Never Attribute to Malice What Stupidity Can Explain
The charitable-attribution heuristic and why it usually serves you better
- Hindsight Bias: Why Everything Seems Obvious in Retrospect
How "I knew it all along" corrupts judgment — and the practices that correct it
- Hyperbolic Discounting — Why Future You Always Gets the Short End
The gap between your present self and future self — and seven ways to bridge it
- Inversion: Solve Problems Backward
Munger’s “avoid stupidity” discipline, applied to real decisions
- Leverage Points
Where to intervene in a system for the most effect with the least effort
- Margin of Safety
Building in a buffer for errors, uncertainty, and things you did not anticipate
- Mental Models: Charlie Munger’s Latticework Approach
Building the multi-disciplinary toolkit that lets you see what single-discipline thinkers miss
- Occam’s Razor: Prefer the Simpler Explanation
The parsimony principle: when simpler explanations win and when they do not
- Omission Bias — Why Doing Nothing Feels Safer Than Acting
The hidden cost of doing nothing — and six ways to make inaction a visible choice
- Opportunity Cost Thinking: What You Give Up When You Choose
The hidden price of every choice — and the practices that make it visible
- Recognition-Primed Decision Making
How pattern recognition drives expert judgment and how to build the patterns that matter
- Red Teaming: Stress-Testing Plans Before They Fail
How to build in adversarial pressure before a plan meets reality
- Reference Class Forecasting
Using base rates and outside-view anchors to forecast more honestly
- Satisficing vs. Maximizing: When “Good Enough” Wins
Why "good enough" often beats "the best", and how to choose deliberately
- Scope Insensitivity: Why Scale Doesn’t Change Your Feelings
The image dominates the number — and how to let scale actually inform your decisions
- Second-Order Thinking: And Then What?
Tracing consequences of consequences, the way Howard Marks does
- Status Quo Bias — Why We Stick with the Default
The cognitive roots of inertia — and six ways to make real choices instead of non-choices
- Stocks and Flows
The fundamental building blocks of every system — and why momentum and delay matter
- Superforecasting
The habits, mindset, and calibration practices of the world’s most accurate forecasters
- Survivorship Bias: Learning from What You Can’t See
The invisible graveyard of failures — and how to reason from the full distribution
- Systems Thinking
Seeing structure instead of events — and the leverage that creates
- The 10-10-10 Rule
Three time horizons for decisions that emotion is distorting
- The Affect Heuristic — When Feelings Substitute for Facts
How immediate feelings shape risk perception — and how to calibrate them
- The Availability Heuristic: Why Memorable Feels Probable
The mental shortcut that makes vivid and recent feel probable — and the practices that correct for it
- The Conjunction Fallacy — When "More Details" Feels More Likely
How narrative coherence tricks probability judgment — and how to think past it
- The Decoy Effect — How an Irrelevant Option Changes Your Choice
Context-dependent choice and the asymmetric dominance effect — and how to decide without being manipulated by the comparison set
- The Dunning-Kruger Effect, Understood Clearly
What the research actually shows, the statistical debate, and practical uses
- The Eisenhower Matrix for Teams
Adapting the urgent/important split for shared priorities, delegation, and team alignment
- The Ladder of Inference
From raw data to action — and how to catch the errors that happen in between
- The Ludic Fallacy: When You Mistake Real Life for a Game
Why casino logic breaks in real life — and how to reason under genuine uncertainty
- The Map Is Not the Territory
Mental models are tools, not truths — how to use them without being captured by them
- The Narrative Fallacy: Why We Can’t Stop Making Stories
How causal stories distort hindsight, forecast, and learning — and how to reduce their pull
- The Outside View
Correcting inside-view optimism with base rates, history, and calibrated humility
- The Peak-End Rule — How Memory Distorts Experience
Why endings and intensity shape memory — and how to use this for better decisions and experiences
- The Planning Fallacy — Why Your Estimates Are Always Wrong
The cognitive bias behind missed deadlines — and six evidence-grounded corrections
- The Pre-Mortem: Imagine It Already Failed
Klein’s prospective-hindsight technique for surfacing hidden risks
- The Regret-Minimization Framework
Deciding by the regret you’ll feel at 80, not the fear you feel today
- The Representativeness Heuristic — Judging by Resemblance
When similarity hijacks probability — and how to correct the substitution
- The Sunk Cost Fallacy: Escaping Bad Investments
Why past investment traps future decisions — and the practices that escape the trap
- The Two-Way Door
Distinguishing reversible from irreversible decisions so you can move at the right speed on each
- Thinking in Bets
Probabilistic thinking, separating luck from skill, and building a better decision process
- Thinking, Fast and Slow, Made Usable
Two systems, the biases they create, and when to slow down
Practice this with IX Coach
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