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LessWrong
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Rationality and decision theory sequences, upvoted in soft skills threads
More resources on Decision Making
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Paul Graham Essays
Startup decision making insights from Y Combinator founder.
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Principles by Ray Dalio
Free decision-making tools and app
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Farnam Street
Decision making mental models and resources, top rec in r/productivity
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LessWrong
Rationality and decision theory community
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Clearer Thinking
Free tools, games, and guides for rational decisions
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Farnam Street (fs.blog)
Mental models and decision-making resources