i thought that this was an April fool's joke | Hacker News

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		mtw on Oct 7, 2008 \| parent \| context \| favorite \| on: New in Labs: Stop sending mail you later regret i thought that this was an April fool's joke

jrockway on Oct 7, 2008 [–]

There was a similar one. I think it involved time travel instead of answering math problems, though.

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