Thinking Tools¶
A curated collection of transferable reasoning tools extracted from diverse domains—from Bayesian statistics to emergency medicine, from game theory to accident investigation.
Each tool is a mental operation that transfers across contexts: a way of structuring problems, evaluating evidence, or making decisions that works whether you're diagnosing a patient, debugging code, or navigating a negotiation.
How This Works¶
522 tools organized into 34 chapters, each extracted from a domain where experts have developed systematic approaches to hard problems.
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Read Like a Book
Start from the beginning and progress through chapters. Each chapter builds from foundational tools to advanced applications.
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Choose Your Path
Browse by problem type, approach, or use the matrix view to find tools relevant to your current challenge.
Chapters¶
Decision Under Uncertainty¶
How to reason when you don't have complete information.
- Bayesian Statistics — Systematic belief updating based on evidence
- Emergency Medicine — Rapid decisions with incomplete information under time pressure
- Intelligence Analysis — Evaluating evidence and managing cognitive biases
- Meteorology — Probabilistic forecasting and uncertainty communication
Persuasion & Influence¶
How to construct arguments and understand social dynamics.
- Game Theory (Signaling) — Strategic communication and credible signals
- Social Psychology — Systematic patterns in human behavior and judgment
- Classical Rhetoric — Structured argumentation and persuasive communication
Creative Generation¶
How to systematically produce novel solutions.
- Design Thinking — Human-centered problem solving and iteration
- Evolutionary Biology — Variation, selection, and adaptation as creative engines
Complex Systems¶
How to understand emergent behavior and system dynamics.
- System Dynamics — Stocks, flows, feedback loops, and delays
- Network Science — Structure and dynamics of connected systems
- Ecology — Living systems, resilience, and interdependence
- Accident Investigation — Understanding failure in complex systems
Skill Mastery¶
How to acquire expertise efficiently.
- Expertise Studies — What distinguishes expert from novice performance
- Learning Theory — Cognitive science of skill acquisition
- Sports Science — Structured practice and performance optimization
Coordination & Cooperation¶
How to align incentives and enable collective action.
- Mechanism Design — Engineering incentive structures
- Organizational Behavior — How organizations function and dysfunction
- Constitutional Design — Institutional structures for coordination
Truth-Seeking¶
How to evaluate claims and design investigations.
- Experimental Design — Rigorous evidence generation
- Formal Verification — Proving correctness systematically
- Logic & Critical Thinking — Argument structure and fallacy detection
Conflict & Competition¶
How to reason in adversarial contexts.
- Competitive Game Theory — Strategic interaction and equilibrium
- Litigation Strategy — Adversarial reasoning and case construction
- Military Strategy — Large-scale conflict and strategic thinking
Resource Allocation¶
How to optimize under constraints.
- Portfolio Management — Risk, return, and diversification
- Operations Research — Systematic optimization techniques
- Core Economics — Foundational economic reasoning
Pattern Recognition¶
How to detect signal in noise.
- Machine Learning — Algorithmic pattern detection and prediction
- Medical Diagnostics — Clinical pattern recognition and differential diagnosis