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Start Estimates With the Background Rate

Before looking at specific clues, check how often an outcome happens overall. Base rates provide a neutral starting point before vivid details influence your judgment.

The main rule

Pause When a Vivid Story Fits

Detailed stories make rare events feel extremely common. When a case feels like a perfect narrative match, deliberately search for the general category frequency first.

Noticing the trap

Define a Broad Reference Group

Place your specific case inside a large, simple category. Checking the average outcome for that entire group gives you an objective starting figure for your prediction.

Setting a baseline

Adjust From the Baseline Gradually

Move away from the background rate only when you find clear evidence. Making small, careful adjustments preserves accuracy better than throwing out the baseline entirely.

Making adjustments

Watch for Changing Background Conditions

Historical frequencies become useless when the surrounding environment changes. If the underlying system shifts, past base rates will mislead your predictions rather than help them.

Limits of method

Idea

Predict Better by Checking Base Rates First

Anchoring judgment on general frequencies prevents compelling details from misleading your daily choices.

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@spot #probability #decision #logic #thinking

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