Frequently asked questions about thinking, epistemology, and cognitive tools. 4568 answers
When direct testing is impossible look for indirect evidence and converging indicators.
Having trusted people review your mental models catches errors you miss.
Having trusted people review your mental models catches errors you miss.
Having trusted people review your mental models catches errors you miss.
Having trusted people review your mental models catches errors you miss.
Having trusted people review your mental models catches errors you miss.
Select one schema you hold with high confidence — a mental model about how something works in your career, relationships, or thinking process. Write it down in two to three sentences. Then share it with someone you trust intellectually and ask them three questions: (1) What assumption does this.
Selecting reviewers who share your existing assumptions. The most common failure in personal schema review is choosing people who think like you do, then treating their agreement as validation. This produces a false sense of confidence — you feel reviewed, but you were only confirmed. Genuine peer.
Having trusted people review your mental models catches errors you miss.
Recording what you tested and what happened creates a validation history.
Recording what you tested and what happened creates a validation history.
Recording what you tested and what happened creates a validation history.
Recording what you tested and what happened creates a validation history.
Recording what you tested and what happened creates a validation history.
Pick a schema you tested recently — a belief you put against reality in any form (a prediction, a conversation, an experiment). Write a validation record with five fields: (1) the schema as you held it before testing, (2) what you did to test it, (3) what you expected to happen, (4) what actually.
Documenting only your successes. If your validation log contains nothing but confirmations, you are not documenting — you are curating a highlight reel. The most valuable entries are the ones where reality surprised you, because those are the entries that will actually change how you think. A.
Recording what you tested and what happened creates a validation history.
Even a well-tested schema may fail in new contexts or at different scales. Validation tells you where a schema works, not that it works everywhere. The boundaries of your tested conditions are the boundaries of your warranted confidence.
Even a well-tested schema may fail in new contexts or at different scales. Validation tells you where a schema works, not that it works everywhere. The boundaries of your tested conditions are the boundaries of your warranted confidence.
Select a schema you consider well-validated — something you have tested and believe to be true. Write it down as a single declarative statement. Then systematically probe its boundary conditions by answering six questions: (1) In what specific contexts have I actually tested this? (2) What.
Treating validation as proof of universality. The failure pattern is: you test a schema, it passes, and you unconsciously upgrade it from "validated within tested conditions" to "true in general." This is the ecological validity error applied to personal epistemology. Every validation has a scope.
Even a well-tested schema may fail in new contexts or at different scales. Validation tells you where a schema works, not that it works everywhere. The boundaries of your tested conditions are the boundaries of your warranted confidence.
Confidence based on tested schemas is categorically different from confidence based on untested assumptions.
Confidence based on tested schemas is categorically different from confidence based on untested assumptions.