Clear Thinking
See through confusion, resolve misunderstandings, recognize your own blind spots, and align your actions with what you care most about.
Collection 0: Starting Out
Giving shape to something you already feel.
Collection 1: Formal Logic
The structure of reasoning itself. When arguments fail here, it is because of their shape, not their content.
Collection 2: Everyday Reasoning
The patterns that show up most often in conversation. Recognizing them makes disagreements feel less confusing.
Collection 3: Evidence
What counts as good evidence? When has someone actually shown what they claim to show?
Collection 4: Cause and Effect
We see patterns and want to explain them. Sometimes the explanation we reach for is not the right one.
Collection 5: Language
Words can mean different things in different contexts. Sometimes that ambiguity hides important distinctions.
Collection 6: Appeals
We are moved by more than logic alone. Tradition, nature, authority, emotion - these matter, but not always in the ways we think.
Collection 7: Numbers and Chance
Our intuitions about probability and statistics often mislead us. The patterns here are subtle but common.
7.1 Probability Basics
7.2 Conditional Probability & Legal Reasoning
7.3 Sampling Errors
7.4 Cherry Picking & Data Selection
7.5 Correlation & Causation
7.6 Regression & Statistical Artifacts
7.7 Publication & Research Biases
7.8 Numerical Misrepresentation
7.9 Cognitive Biases in Statistical Thinking
Collection 8: Rhetoric
The more sophisticated patterns. Some are deliberate tactics; others are traps we fall into without noticing.