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Amateurs Solve a Famous Computer Science Problem On Discord

A team of amateurs recently came together in an online collaboration called the Busy Beaver Challenge to pin down the value of BB(5), the fifth “busy beaver” number — a notoriously difficult problem in theoretical computer science.


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A ‘Rebel’ Without a Ph.D.

March 26, 2014

A conversation with the mathematical physicist Freeman Dyson on quantum electrodynamics, climate change and his latest pet project.