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Logic puzzle

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• Is the world eternal? YES
• Do humans have contra-causal free will (i.e., can humans do otherwise)? NO
• Is beauty in the eye of the beholder? YES
• Do humans have souls? YES
• Are there natural rights? YES
• Is it morally permissible to eat meat? NO
• Is the unexamined life worth living? NO
• Is truth subjectivity? YES
• Is virtue necessary for happiness? YES
• Can a computer have a mind? YES
• Can humans know reality as it is in itself? YES
• Is hell other people? YES
• Can art be created accidentally? NO
• Can we change the past? NO
• Are numbers real? NO
• Is it always better to know the truth? YES

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Six logicians finish dinner.  The waitress asks, “Do you all want coffee?”
First logician: “I don’t know.”
Second logician: “I don’t know.”
Third logician: “I don’t know.”
Fourth logician: “I don’t know.”
Fifth logician: “I don’t know.”
Sixth logician: “No.”

Who gets coffee and why?  Click “read more” for the answer.

The waitress has asked, “Do you all want coffee?”  In saying “I don’t know,” each of the first five logicians is saying, “I want coffee, and at this moment it does appear possible that all six of us do, but we don’t yet have enough information to say so definitely.”

The sixth logician doesn’t want coffee, so he’s able to say for certain that not everyone in the group does.  So the waitress serves coffee to the first five logicians.

Hat tip to the Futility Closet for the game!


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