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A little perspective

Fermi

Guess a range,
not a number.

How big? How far? How many? Put two numbers around what you know. Find out where the world really lands.

Getting the questions ready…

The idea, in one range

4080

If the answer is 60, you caught it.×2 wide 90 points

Make room for the answer.

  1. 01
    Set your limits

    Give a low end and a high end. The true number needs to fall inside.

  2. 02
    Trust your judgment

    Narrower ranges score more. ×10 wide earns 67 points; a miss earns zero.

  3. 03
    Leave a little wiser

    Discover the answer, its scale, and the story behind it.

Big numbers? Try 2k, 3.5M or 1 billion.