Fermi Estimation
Estimate answers with confidence intervals. Start with 500 points.
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60s per question. Less time means rougher anchors and braver intervals.
Scoring
Hit: base pts \u00d7 spread multiplier (tight = up to \u00d71.5)
Miss: lose pts + overconfidence penalty for tight misses
Skip/timeout: -20 pts
Be narrow when confident, wide when unsure.