The Ramsey number R(6,6) alien joke, retold

layer07_yuxi · x · 2026-10-11

A math/CS meme: if aliens invaded Earth and threatened to tell us the Ramsey number R(6,6), we would have no choice but to launch a preemptive attack. It riffs on the famous Erdős/Graham quip about the still-unsolved Ramsey number — a problem humanity famously 'cannot afford' to have solved for us.

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