Explore the How the World Works series by topic. Start with either established overview, then follow the articles on systems, exchange, cooperation and human decisions.
Two starting points
- Narrative starting point: From Point Nemo to Singapore
- Causal-map starting point: Matter, Energy, Earth, Infrastructure, Institutions and Space
Scale, structure and patterns
- Distributions — Why the Average Can Describe Almost Nobody
- Scale — Why Systems Change When They Get Bigger
- Density — Why Packing More Into the Same Space Changes Everything
- Path Dependence — Why the Past Remains Inside the Present
- Emergence — How Simple Interactions Create Patterns Nobody Designed
- Nonlinearity — Why Small Changes Can Produce Huge Effects and Big Inputs Can Do Almost Nothing
- Elasticity — Why the Same Change Barely Moves One System and Bends Another
- Sorting — Why Similar People, Firms and Opportunities Cluster Together
Movement, delay and consequences
- Externalities — When Consequences Escape the Decision
- Friction — Why Movement, Exchange and Change Are Never Free
- Latency — Why Delay Changes What a System Can See and Do
- Irreversibility — Why Some Decisions Change the Future More Than Others
- Second-Order Effects — What Happens After the First Consequence
Production, costs and trade-offs
- Fixed Costs — Why the First Unit Can Cost More Than the Thousandth
- Marginal Analysis — Why the Next Unit Matters More Than the Average
- Economies of Scope — Why Making Different Things Together Can Cost Less Than Making Them Apart
- Learning Curves — Why Repetition Changes the Cost of Doing the Next One
- Substitution — How Systems Replace Scarce, Costly or Failing Inputs
- Complementarity — Why Some Things Become More Valuable Together
- Opportunity Cost — The Future You Give Up When You Choose
- Comparative Advantage — Why Being Best at Everything Does Not Mean You Should Do Everything
Value, time and financial exchange
- Discounting — Why the Future Is Worth Something Different Today
- Arbitrage — Why Gaps Invite Movement Until the Opportunity Shrinks
- Liquidity — Why Something Valuable Can Still Be Hard to Exchange
- Leverage — Why Borrowed Resources Amplify Both Gains and Losses
Shared resources, rules and bargaining
- Common-Pool Resources — Why Shared Resources Need Rules Before They Run Out
- Public Goods — Why Everyone Can Benefit Even When Nobody Wants to Pay Alone
- The Hold-Up Problem — Why Specific Investments Make Cooperation Vulnerable After Commitment
- Mechanism Design — How Rules Can Make Self-Interest Produce Better Outcomes
- Rent-Seeking — When Effort Goes Into Capturing Value Instead of Creating It
- Bargaining — Why Creating Value and Dividing It Are Different Problems
- Price Discrimination — Why the Same Thing Can Rationally Sell for Different Prices
- Winner’s Curse — Why Winning Can Be Evidence That You Paid Too Much
Shared information and governability
- Common Knowledge — Why It Matters That Everyone Knows Everyone Knows
- Information Asymmetry — What Happens When One Side Knows More
- Legibility — Why Large Systems Simplify Reality Before They Can Govern It
Judgment, decisions and cognitive biases
- Time Inconsistency — Why Tomorrow’s Best Choice Can Betray Today’s Best Plan
- Defaults — The Choice That Happens When You Do Nothing
- Anchoring — Why the First Number Can Pull Every Later Judgment Toward It
- Framing — Why the Same Outcome Changes When the Description Changes
- Loss Aversion — Why Losing $100 Can Matter More Than Gaining $100
- Availability Heuristic — Why What Comes to Mind Easily Feels More Common Than It Is
- Base-Rate Neglect — Why a Vivid Story Can Overpower the Numbers That Came Before
- Confirmation Bias — Why We Search Harder for Evidence That Lets Us Keep Believing
- Planning Fallacy — Why This Project Will Take Longer Than the Plan Says
- Sunk Costs — Why Money Already Spent Can Keep Bad Decisions Alive
Return to the World & Knowledge Hub to continue into related subjects.