The proof, known to be so hard that a mathematician once offered 10 martinis to whoever could figure it out, uses number ...
The setup is simple. One partner points out a bird to the other — or in a common variation, recounts a fake bird encounter from earlier in the day — and awaits a response. A partner who responds with ...
A mix of technology and politics has given an unprecedented boost to once-fringe ideas—but they are pretty much the same ...
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