> If two people have blue eyes, "Somebody has blue eyes" is not new information,... | Hacker News

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x1798DE on Aug 29, 2016 | parent | context | favorite | on: Seven Puzzles You Think You Must Not Have Heard Co...

> If two people have blue eyes, "Somebody has blue eyes" is not new information, because everyone has already seen that someone has blue eyes.

The new information in that scenario is that the other guy with blue eyes knows that someone has blue eyes.

tiglionabbit on Aug 30, 2016 [–]

If they have seen someone with blue eyes they would already know that.

JoeAltmaier on Aug 31, 2016 | [–]

They know that you know that. That's the new info.

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