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Mind & Self

Mental Models & Famous Laws

A latticework for clearer thinking

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Basics Concepts

Decision Tools(5)Reasoning Tools(5)Systems and Cycles(2)Thinking Traps(1)

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A daily learning loop for real-world domains. Built on epistemic honesty and spaced repetition. No dark patterns.

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Built with care, MIT licensed.v1.0·Accessibility statement·Education, not advice. Source

Concepts›Sunk cost

Concept 04 of 21

settled

Sunk cost

What you've already spent shouldn't decide what you do next.

Step 1

Predict first

In one or two sentences, what do you think this concept means? Wrong is fine; the small struggle is what makes the answer stick.

Second-order thinking Occam's razor