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Mental Models
Series • 42 posts

Mental Models

The Mental Models series explores practical thinking tools that help you make better decisions, avoid common mistakes, and see reality more clearly.

These articles break down timeless ideas you can apply to work, business, learning, and everyday life. For the full framework in one place, explore the book 100 Mental Models for Better Thinking.

Explore the book: 100 Mental Models for Better Thinking

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Posts in this series

1

Systems Thinking: Why Everything Connects to Everything Else

Learn how systems thinking helps you see connections, feedback loops, delays, and hidden causes so you can make better decisions.

13 min read
2

Bottlenecks: Find the Constraint That Slows Everything Down

Learn how bottlenecks limit performance, why fixing non-constraints wastes effort, and how to find the constraint that slows a system down.

15 min read
3

Red Queen Effect: Why Standing Still Means Falling Behind

Learn how the Red Queen Effect explains competition, adaptation, and why constant improvement is often required just to keep your position.

13 min read
4

Antifragility: How to Benefit From Disorder and Stress

Learn how antifragility helps you design systems, careers, and habits that improve from volatility instead of merely surviving stress and shocks.

10 min read
5

Zero-Sum vs Positive-Sum Thinking: Stop Playing the Wrong Game

Learn the difference between zero-sum and positive-sum thinking, when each applies, and how to avoid treating every decision like a contest.

10 min read
6

Nash Equilibrium: Understanding Stable Outcomes in Competition

Learn what Nash equilibrium means, why stable outcomes emerge in competition, and how to use the model to make better strategic decisions.

15 min read
7

Prisoner's Dilemma: Why Cooperation Is Hard but Powerful

Learn the prisoner's dilemma, why cooperation breaks down, and how trust, repetition, and incentives make cooperation stronger.

12 min read
8

Game Theory Basics: How to Think When Other People Are Also Thinking

Learn game theory basics, why strategic thinking matters, and how to make better decisions when other people are responding too.

15 min read
9

Tragedy of the Commons: Why Shared Resources Get Overused

Learn the tragedy of the commons, why shared resources get overused, and how better rules, incentives, and ownership protect them.

13 min read
10

Principal-Agent Problem: When Other People's Goals Diverge from Yours

Learn the principal-agent problem, why agents may act against your interests, and how to design better incentives, oversight, and trust in decisions.

13 min read
11

Incentives: Show Me the Reward and I'll Show You the Behavior

Learn how incentives shape behavior, why rewards often beat intentions, and how this mental model improves decisions in work, business, policy, and life.

15 min read
12

Scarcity: Why Rare Things Feel More Valuable

Learn scarcity, why rare things feel more valuable, and how this mental model shapes pricing, desire, attention, and everyday decisions.

15 min read
13

Social Proof: Why We Follow Crowds More Than We Admit

Learn how social proof shapes decisions, why crowds influence us, and how to use this mental model without outsourcing your judgment.

16 min read
14

Reciprocity: Why Giving First Often Changes Everything

Learn how reciprocity shapes trust, influence, relationships, work, negotiation, and better decisions by changing what people feel moved to return.

14 min read
15

Status Quo Bias: Why People Resist Change Even When It Helps

Learn status quo bias, why people resist change even when change helps, and how to make better decisions without overprotecting the familiar.

14 min read
16

Loss Aversion: Why Losses Hurt More Than Gains Feel Good

Learn loss aversion, why losses feel stronger than gains, and how this bias affects money, careers, relationships, and important life choices.

13 min read
17

The Sunk Cost Fallacy: Why You Keep Investing in the Wrong Things

Learn the sunk cost fallacy, why past investments distort judgment, and how to stop throwing more time, money, or effort after bad decisions.

13 min read
18

Path Dependence: How Early Choices Shape Future Outcomes

Learn path dependence, why early decisions shape future outcomes, and how to avoid getting trapped by choices that no longer fit reality.

11 min read
19

Network Effects: Why Products and Ideas Snowball

Learn how network effects make products, platforms, and ideas more valuable as more people use them, and where the model can mislead you.

9 min read
20

Lindy Effect: Why the Old Often Outlasts the New

Learn the Lindy Effect, why some old ideas and tools keep lasting, and how to use age as one signal when making better decisions.

13 min read
21

Chesterton's Fence: Why You Should Understand Before Changing

Learn Chesterton's Fence, why you should understand before changing things, and how this mental model prevents costly decisions in work and life.

12 min read
22

Goodhart's Law: When Metrics Stop Measuring What Matters

Learn Goodhart's Law, why metrics get distorted, and how to measure performance without losing sight of the outcome that matters.

10 min read
23

Parkinson's Law: Why Work Expands to Fill the Time Available

Learn Parkinson's Law, why work expands to fill the time available, and how to use tighter constraints to finish faster and better.

10 min read
24

The Pareto Principle: How 20% of Effort Creates 80% of Results

Learn the Pareto principle, why a few inputs often drive most outcomes, and how to use the 80/20 rule in work, business, and life.

12 min read
25

Leverage: How Small Inputs Create Massive Outcomes

Learn the leverage mental model, why small inputs can create massive outcomes, and how to use leverage wisely in work, money, and life.

10 min read
26

Feedback Loops: The Invisible Forces Driving Growth and Collapse

Learn how feedback loops shape growth and collapse, why reinforcing and balancing loops matter, and how to use them in everyday decisions.

9 min read
27

Margin of Safety: How to Make Better Decisions Under Uncertainty

Learn the margin of safety mental model and how extra room for error helps you make better decisions in money, work, planning, and life.

11 min read
28

Compounding: The Mental Model Behind Wealth, Skills, and Progress

Learn how the compounding mental model turns small repeated actions into outsized gains in wealth, skills, habits, and long-term progress.

9 min read
29

Regression to the Mean: Why Extreme Results Usually Normalize

Learn regression to the mean, why extreme results often move closer to average, and how to avoid misreading luck, skill, and short-term swings.

10 min read
30

The Map Is Not the Territory: Why Reality Beats Abstractions

Learn why the map is not the territory, how abstractions distort reality, and how to make better decisions by checking models against the world.

10 min read
31

Hanlon's Razor: Never Mistake Incompetence for Malice

Learn Hanlon's Razor, how it works, and when to avoid assuming bad intent so you can make calmer, clearer decisions in work and life.

10 min read
32

Occam's Razor: Why the Simplest Explanation Often Wins

Learn Occam's Razor, why the simplest explanation often wins, and how to use it without oversimplifying decisions, diagnosis, and problem solving.

11 min read
33

Survivorship Bias: The Success Stories That Mislead Us

Learn survivorship bias, why success stories mislead us, and how to make better decisions by noticing the silent evidence behind failure.

11 min read
34

Confirmation Bias: Why Smart People Still Fool Themselves

Learn what confirmation bias is, why smart people still fool themselves, and how to spot it before it distorts decisions, beliefs, and judgment.

11 min read
35

Probabilistic Thinking: How to Think in Bets, Not Certainties

Learn probabilistic thinking, how to think in bets instead of certainties, and make calmer, smarter decisions under uncertainty.

11 min read
36

Circle of Competence: Knowing What You Actually Understand

Learn circle of competence, why knowing what you actually understand improves decisions, and how to grow your edge without false confidence.

11 min read
37

Second-Order Thinking: Looking Beyond Immediate Consequences

Learn second-order thinking, why immediate wins can mislead you, and how to make better decisions by looking at downstream consequences.

10 min read
38

Opportunity Cost: The Hidden Price of Every Decision

Learn opportunity cost, why every decision has a hidden price, and how to use it to make better choices in work, money, time, and life.

12 min read
39

Inversion: Solve Problems by Avoiding Stupidity First

Learn inversion, how it works, and how avoiding obvious mistakes first can improve decisions, problem solving, planning, and everyday judgment.

10 min read
40

First Principles Thinking: How to Break Problems Down to the Truth

Learn first principles thinking, how it works, and how to break problems down to the truth so you can make clearer decisions and better plans.

10 min read
41

What Is a Mental Model and Why It Improves Everyday Thinking

Learn what a mental model is, why it improves everyday thinking, and how to use better thinking tools for decisions, work, learning, and life.

9 min read
42

Why I Wrote "100 Mental Models for Better Thinking"

The story behind the book, from The Daily Concept to a full mental models toolkit for better thinking in the age of AI.

3 min read