A Comprehensive Overview of Antitrust Law Principles
A complete guide to antitrust law: from Standard Oil and the Sherman Act through the Chicago School debate, big tech cases, the EU Digital Markets...
All Decision Making in Concepts
A complete A–Z index of every Decision Making article on When Notes Fly, part of our Concepts coverage. New to the topic? Start with the foundational explainers, then move on to case studies and applied frameworks. Returning for something specific? Use the list below to jump straight to it.
For the latest pieces newest-first, see the Decision Making section. For related ideas across the section, see the Concepts archive. How we research and review articles: editorial standards.
Browse All Decision Making Articles
A Guide to Communism's Legacy
A comprehensive guide to communism covering Marxist theory, Leninism and Stalinism, the Soviet Union, Maoist China, Cuba, and the ongoing debates...
Accurate Predictions Using Reference Class Forecasting
Reference class forecasting ignores your specific plan and uses historical outcomes of similar projects to predict what will actually happen.
An Introduction to Second-Order Thinking and Its Examples
Second-order thinking asks not just "what happens next?" but "what happens after that?" The mental model Howard Marks calls essential for...
Analyzing Renting vs Buying a Home with Key Metrics
The rent vs buy debate settled with math — price-to-rent ratios, the 5% rule, opportunity cost of a down payment, and when buying genuinely makes...
Better Decisions Under Uncertainty: A Practical Guide and Toolkit
A practical guide to decision-making under uncertainty: the core cognitive biases, probabilistic thinking, premortems, a decision journal template, and a bias checklist you can apply immediately.
Cognitive Bias Evidence Map: Robust vs. Failed-to-Replicate Biases
An evidence map of well-known cognitive biases rated by how well they replicate - separating robust findings (anchoring, framing, confirmation bias) from contested ones (ego depletion, social priming).
Common Decision Traps and How to Avoid Them
Common traps include confirmation bias, sunk cost fallacy, analysis paralysis, and groupthink that lead to poor choices despite good intentions.
Creating an Emergency Fund: Essential Steps and Tips
An emergency fund of 3-6 months of expenses is the foundation of financial stability. Learn where to keep it, how to build it on any income, and...
Critical Thinking: A Guide to Clear Reasoning
Critical thinking is the ability to analyze information objectively, evaluate arguments carefully, and reach well-reasoned conclusions rather than...
Decision Frameworks Used by High Performers to Think Clearly
Top performers use frameworks like regret minimization and the reversibility test—not harder thinking.
Decision Journaling for Better Judgment Over Time
Making many decisions depletes mental energy, leading to worse choices later. Reduce decision fatigue through routines, defaults, and strategic...
Decision Journaling: Improve Your Decision-Making Skills
Decision journaling is the practice of recording your reasoning at the time of a decision and reviewing outcomes later.
Defining a Recession and Its Broader Impacts
A recession is a significant decline in economic activity lasting more than a few months. Learn the NBER definition, leading indicators, historical...
ESG Investing: Key Principles and Performance Insights
ESG investing screens companies on environmental, social, and governance factors. Learn how it works, whether it outperforms, and the serious...
Effective Budgeting Strategies: Building a Functional Budget
Learn how to build a budget that works using the 50/30/20 rule, zero-based budgeting, and envelope method — plus the behavioral science of why...
Effective Money-Saving Strategies Backed by Research
A research-backed guide to saving money effectively: the behavioral science of present bias, automatic savings, the 50/30/20 rule, zero-based...
Exploring Civil Society: A Historical Perspective
A comprehensive guide to civil society: its philosophical origins from Aristotle to Gramsci, Tocqueville's voluntary associations, Putnam's social...
Exploring Financial Independence: Principles and Strategies
A thorough explanation of financial independence and the FIRE movement: the 4 percent rule, FI number calculation, Lean FIRE, Fat FIRE, Barista...
Exploring How Credit Scores Impact Financial Health
A complete guide to how credit scores work: FICO score factors and weights, credit utilization strategy, building credit from scratch, error rates...
Exploring the Rule of Law: Concepts and Historical Roots
An in-depth exploration of the rule of law: Dicey's classic formulation, thin versus thick conceptions, Magna Carta, habeas corpus, judicial...
Fiscal Policy Explained: Government Strategies and Effects
Fiscal policy is how governments use taxation and spending to manage the economy. Learn about Keynesian multipliers, austerity debates, automatic...
Game Theory Basics: Strategy, Cooperation, and Outcomes
Game theory is the mathematical study of strategic interaction. From the Prisoner's Dilemma to nuclear deterrence, this explainer covers Nash...
Hick's Law: Why More Choices Slow You Down
Hick's Law explained: how decision time grows logarithmically with the number of choices, its information-theory roots, design uses, and where it breaks down.
How to Build Credit: A Complete Guide
Learn how to build credit from scratch or repair damaged credit using secured cards, credit-builder loans, and the authorized user strategy.
Index Funds vs Individual Stocks: Performance Insights
Index funds vs individual stocks — the performance data, expense ratios, diversification math, and what most investors should actually do with...
Inflation: Understanding Its Measurement and Effects
Inflation explained: how CPI and PCE measure it, the difference between real and nominal returns, how inflation erodes purchasing power, and major...
International Trade Theory: Benefits and Challenges
International trade theory explains why nations trade, who benefits, and who loses. From Ricardo's comparative advantage to Krugman's New Trade...
Investing for Beginners: Key Strategies Explained
A research-backed guide to investing for beginners: index funds, asset allocation, compound interest, dollar-cost averaging, tax-advantaged...
Is a College Degree Still Valuable in 2026?
A data-driven look at whether a college degree still pays off in 2026 — ROI by major, earnings premium vs student debt, and when alternatives...
Jeff Bezos's Regret Minimization Decision Framework
The regret minimization framework is Jeff Bezos's decision-making method: project yourself to age 80 and ask which choice you will regret not...
Long-Term Thinking: Importance and Challenges Explained
Long-term thinking means weighing future consequences as seriously as immediate ones. Learn why our brains resist it and the frameworks that help...
Making Informed Decisions in Uncertain Situations
Most important decisions happen under uncertainty. Learn expected value thinking, pre-mortems, base rates, and Jeff Bezos's Type 1 vs Type 2...
Mastering Financial Statements: Essential Reading Guide
Learn how to read financial statements: what the income statement, balance sheet, and cash flow statement each show, key ratios to look for, and...
Mental Models That Make Every Decision Sharper
Second-order thinking, inversion, and first principles expose what you're missing. The right mental model turns a hard decision into an obvious one.
Microeconomics: Key Concepts and Theories Explained
A complete guide to microeconomics: consumer and producer theory, market structures, externalities, information asymmetry, public goods, and key...
Moral Hazard Explained: Risk from Protection
Moral hazard occurs when protection from consequences encourages riskier behavior. Learn its origins, real-world examples, and how to design...
Personal Finance Essentials: Managing Your Financial Life
Personal finance fundamentals explained: budgeting, saving, investing, debt, insurance, and estate planning — with financial literacy statistics...
Pre-Mortem Analysis: Anticipating Project Failures
Pre-mortem analysis is a prospective technique that imagines a project has already failed and works backward to identify causes.
Probabilistic Thinking for Enhanced Decision-Making
Probabilistic thinking means thinking in likelihoods rather than absolutes. Assign probabilities to outcomes to make better decisions under...
Risk vs Uncertainty: What People Confuse
Risk has known probabilities; uncertainty doesn't. With risk you can calculate odds, with uncertainty you can't even assign probabilities to outcomes.
Satisficing vs Maximizing Explained
Satisficing settles for good enough while maximizing chases the best. Learn the costs of each, when to use them, and how to decide how to decide.
Sunk Cost Fallacy and Its Effect on Decision Making
Britain and France had signed a treaty to build the Concorde supersonic jet in 1962. By 1968 it was clear the aircraft would never be commercially...
The Anchoring Effect: How the First Number Shapes the Rest
The anchoring effect explained through Tversky and Kahneman's wheel experiment, selective accessibility, courtroom and pricing examples, and how to fight it.
The Availability Heuristic: Why Vivid Beats Likely
The availability heuristic explained: why we judge probability by ease of recall, how vivid events distort risk, and how to defend against the bias.
The Premortem: Imagining Failure Before It Happens
The premortem technique explained: how imagining a project has already failed, via prospective hindsight, surfaces risks that ordinary planning misses.
The Role of Index Funds in Modern Investment Strategies
An index fund tracks a market index at minimal cost. Backed by decades of SPIVA data and Nobel Prize research, learn why passive investing beats...
The Truth About Passive Income: Myths and Realities
A clear-eyed look at passive income: the myth versus reality, Robert Kiyosaki's influence, the IRS definition, dividend investing, rental property,...
The Zero-Sum Fallacy: Understanding Competition and Outcomes
Zero-sum thinking assumes one person's gain requires another's loss. Learn when it's accurate, when it's a fallacy, and how fixed-pie bias poisons...
Thinking About Risk: A Practical Framework Explained
A practical framework for thinking about risk: expected value vs utility, availability heuristic, tail risks, diversification, and the Kelly...
Understanding Availability Bias in Investing
The availability bias causes investors to overweight recent dramatic events. Learn how it distorts portfolio decisions and how to counteract it...
Understanding Exponential Growth and Our Limitations
Exponential growth compounds on itself, doubling repeatedly. Learn why humans instinctively think linearly, how the chessboard problem illustrates...
Understanding Financial Decision-Making Through Psychology
Why smart people make bad financial decisions, and what behavioral economics, psychology, and decades of research reveal about how to think about...
Understanding Keynesian Economics: Demand and Stabilization
Keynesian economics holds that aggregate demand drives output and employment and that government fiscal policy can stabilize economies during...
Understanding Stock Market Mechanics and Index Fund Benefits
A clear explanation of how the stock market works: exchanges, how prices are set, indices, market capitalization, and why index funds outperform...
Understanding Wealth Inequality: Metrics and Dynamics
What is wealth inequality? The Gini coefficient, Piketty's r > g thesis, wealth vs income data, top 1% statistics, what drives inequality, and the...
Understanding the Cobra Effect in Finance
How financial risk management tools — portfolio insurance, VaR, securitization — created the crises they were designed to prevent.
Value Investing: How to Evaluate Stocks Like Warren Buffett
Value investing means buying stocks worth more than their price. Learn Graham's intrinsic value concept, Buffett's adaptations, and whether the...
Wealth Mindset: How the Wealthy Think Differently
Research-backed analysis of wealth mindset differences: how high-net-worth individuals actually think about money, risk, time, and opportunity —...
What Is Behavioral Economics? How Psychology Overturned the Rational Actor
Behavioral economics combines psychology and economics to explain how people actually make decisions. This explainer covers prospect theory, loss aversion, nudge theory, cognitive biases, and why the rational actor model was wrong.
What Is Behavioral Economics? Psychology and Decision-Making
Behavioral economics combines psychology and economics to explain how people actually make decisions.
What Is Behavioral Finance? When Markets Meet Psychology
Behavioral finance explains how psychological biases distort investment decisions and market prices.
What Is Communism? Marx, Revolution, and the Experiment
A comprehensive guide to communism covering Marxist theory, Leninism and Stalinism, the Soviet Union, Maoist China, Cuba, and the ongoing debates about why communism failed and what, if anything, remains of its ideas.
What Is Debt: Good Debt vs Bad Debt Explained
Not all debt is equal. Understand how interest works, what separates good debt from bad debt, and when borrowing is a tool vs a trap.
What Is Decision Making Under Uncertainty?
Decision making under uncertainty means choosing when you don't know all outcomes or probabilities. Use probabilistic thinking and scenarios.
What Is Game Theory? Strategy, Equilibrium, and Why People
Game theory is the mathematical study of strategic interaction. From the Prisoner's Dilemma to nuclear deterrence, this explainer covers Nash equilibria, cooperation, auctions, signaling, and why the theory changed economics, biology, and politica...
What Is Labor Economics?
Labor economics studies how wages are determined, why workers get paid what they do, and how labor markets function.
What Is Money? Exploring Currency, Credit, and Trust
Money is one of humanity's most consequential inventions. This guide covers the history of money from Mesopotamian clay tablets to cryptocurrency,...
What Is Narrative Economics: How Stories Move Markets
Nobel laureate Robert Shiller argues that economic narratives spread like viruses and drive market booms and busts. Learn how stories shape economies.
What Is Opportunity Cost: A Fundamental Economic Concept
Opportunity cost is what you give up when you choose one option over another. Learn why it's the foundation of economic thinking and better decisions.
What Is Political Philosophy? Justice and Power Analyzed
Political philosophy asks what justifies state power, what justice requires, and how free societies should be organized.
What Is Welfare Economics
Welfare economics asks how to measure and improve societal wellbeing. Learn about Pareto efficiency, Kaldor-Hicks, the Easterlin paradox, and happiness research.
What Is Welfare Economics? Evaluating Societal Wellbeing
Welfare economics asks how to measure and improve societal wellbeing. Learn about Pareto efficiency, Kaldor-Hicks, the Easterlin paradox, and...
What Is the Principal-Agent Problem and Why It Matters
The principal-agent problem occurs when someone acts on your behalf but has different incentives.
When Your Gut Is Right (and When It Will Wreck You)
Kahneman and Klein agreed on two conditions that make intuition trustworthy. Miss either one and your gut is lying to you.
Why Most Decisions Fail Due to Poor Framing
Poor decision framing means asking the wrong question. 'Should I quit?' differs from 'What career maximizes growth?' Frame determines outcomes.
Why Rational Decisions Feel Emotionally Wrong
Rational decisions feel wrong because your brain evolved for survival, not optimization. Emotions trigger fast but logic requires slow deliberation.
Why Smart People Make Irrational Financial Choices
Smart people make terrible financial decisions all the time. Behavioral economics explains the cognitive biases — loss aversion, present bias,...
Winner's Curse: Why Winning Auctions Can Cost You
The winner's curse explains why the highest bidder often overpays. Learn how it affects M&A deals, IPOs, talent bidding wars, and how to avoid it.