> I said we can't know if there is an external force. Can you know for sure ... | Hacker News

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derleth on July 5, 2012 | parent | context | favorite | on: Algernon's Law

> I said we can't know if there is an external force.

Can you know for sure you're not the Queen of England?

Alex3917 on July 6, 2012 [–]

Depends on your definition of 'know'. There is an entire subfield of philosophy devoted to this question.

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