New to mental models? This page tells you exactly where to begin and how to get the most from ThinkingKit.
Mental models are thinking frameworks — repeatable patterns of reasoning that help you understand problems, make decisions, and avoid mistakes. They’re the tools your brain uses to process the world. Everyone already has mental models. The question is whether yours are deliberate and effective, or unconscious and full of blind spots.
The world’s best thinkers — Charlie Munger, Elon Musk, Daniel Kahneman, Ray Dalio — don’t just know more facts. They have better models. ThinkingKit is a free library of the most powerful ones, with interactive tools to help you actually use them.
If you have 5 minutes: Read Inversion. It’s the model with the highest return on investment — you’ll start using it immediately.
If you have 30 minutes: Work through the Foundations learning path — 10 essential models in the order that builds understanding most efficiently.
If you have a specific problem: Use the Thinking Toolkit Matcher. Describe your situation, get matched to the models that fit.
If you want to practice: Try the interactive tools — the Decision Matrix, Pre-Mortem Generator, or Bias Check.
If you want to go deep: Read about Model Chains — how to combine multiple models in sequence for specific outcomes.
Reading about a model is not learning it. Here’s what works:
Step 1: Understand. Read the model page. Pay attention to the “How it works” section and the visual explanation.
Step 2: Recognise. Look for the model in your daily life. Where has this pattern appeared before?
Step 3: Apply. Use the “Try it now” exercise at the bottom of each model page. Apply the model to a real situation you’re facing right now.
Step 4: Reflect. After applying the model, ask: “Did this change how I think about the problem?” If yes, the model is now part of your toolkit.
Making better decisions → Decision-Maker’s Toolkit path
Understanding complex systems → Systems Thinking path
Spotting logical errors → Argument Analyzer tool
Browsing all models → Full model library (filterable by discipline and difficulty)
Printable references → Download free PDF cheat sheets