Mental models are frameworks, theories, or general thinking concepts that individuals use to simplify complex problems and understand the world. Here are 100 mental models across various disciplines:
Decision Making & Problem Solving

1. Pareto Principle (80/20 Rule)
2. First Principles Thinking
3. Occam’s Razor
4. Hanlon’s Razor
5. SWOT Analysis
6. Decision Matrix
7. Cost-Benefit Analysis
8. Critical Thinking
9. Sunk Cost Fallacy
10. Zero-Sum Thinking
Economics & Finance
- Supply and Demand
- Opportunity Cost
- Comparative Advantage
- Inflation
- Time Value of Money
- Compound Interest
- Game Theory
- Tragedy of the Commons
- Moral Hazard
- Diminishing Returns
Psychology
- Cognitive Dissonance
- Confirmation Bias
- Maslow’s Hierarchy of Needs
- Dunning-Kruger Effect
- Reciprocity
- Anchoring
- Halo Effect
- Survivorship Bias
- Availability Heuristic
- Loss Aversion
Science & Engineering
- Scientific Method
- Feedback Loops
- Homeostasis
- Leverage
- Network Effects
- Chaos Theory
- Pascal’s Principle in Fluid Mechanics
- Heisenberg Uncertainty Principle
- Thermodynamics Laws
- Signal to Noise Ratio
Philosophy & Ethics
- Utilitarianism
- Stoicism
- Existentialism
- Kantian Ethics
- Social Contract
- Taoism
- Nihilism
- Socratic Method
- Logical Fallacies
- Reductio ad Absurdum
Business & Management
- Moore’s Law
- Disruptive Innovation
- Blue Ocean Strategy
- SWOT Analysis
- Core Competency
- Freemium Model
- Just-In-Time Manufacturing
- Economies of Scale
- Agile Methodology
- Lean Startup
Social Sciences
- Broken Windows Theory
- Dunbar’s Number
- Tipping Point
- Long Tail
- Social Proof
- Cultural Capital
- Gentrification
- Matthew Effect
- Diffusion of Innovations
- Prisoner’s Dilemma
Learning & Education
- Spaced Repetition
- Bloom’s Taxonomy
- The Feynman Technique
- Deliberate Practice
- Metacognition
- Growth Mindset
- Learning Pyramid
- Pedagogy vs Andragogy
- Scaffolding
- Intrinsic vs Extrinsic Motivation
Communication
- Active Listening
- Nonviolent Communication
- The Medium is the Message
- Elevator Pitch
- Storytelling
- Signal vs Noise
- KISS Principle (Keep It Simple, Stupid)
- Dog Whistle Politics
- Straw Man Argument
- Virtue Signaling
Miscellaneous
- Poka-Yoke (Mistake Proofing)
- OODA Loop (Observe, Orient, Decide, Act)
- Gödel’s Incompleteness Theorems
- Parkinson’s Law
- Murphy’s Law
- The Peter Principle
- The Butterfly Effect
- The Hawthorne Effect
- The Streisand Effect
- The Lindy Effect
Understanding these mental models can provide you with a more well-rounded view of the world and enhance your decision-making skills.

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