Calibration

Do you know how much you don’t know?

Five questions, five real closing prices. For each one, pick the narrowest range you are 90% sure the answer falls into.

1. What did SPY close at on December 31, 2025?

2. What did VLO close at on December 31, 2025?

3. What did GLD (gold) close at on December 31, 2025?

4. What did USO (oil) close at on December 31, 2025?

5. What did NVDA close at on December 31, 2025?

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