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Mind Blown · Collisions: the birthday bound

The birthday collision

Twenty-three people and 365 days. Why is a shared birthday a coin flip, and what does that cost you in bits?

Collisions happen between pairs of people, and a room gains pairs far faster than it gains people. Two panels sit side by side: the odds that some two of them match, and the odds that one matches yours. Watch the first run away from the second.

Board: The Birthday Paradox →

Three panels stack on a narrow screen. Both sliders and the tabs stay above them.

try this Open A short link id, push How many of them up past a million, and watch How many you may mint.

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