Why Does 2 + 2 = 4? What Math Teaches Us About Deep Reality | Peter Robinson | Hoover Institution

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  2 plus 2 equals 4.

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  In all places and for all time, 2 plus 2 equals 4.

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  But why?

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  What does math tell us about the nature of reality?

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  David Berlinski, Sergio Kleinerman, and Stephen Meyer on Uncommon Knowledge now.

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  Welcome to Uncommon Knowledge.

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  Recording today in Salzburg, Austria, I'm Peter Robinson.

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  David Berlinski has taught math, philosophy, and English at universities including Stanford,

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  Rutgers, the City University of New York, and the Université de Paris.

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  I hope you like that pronunciation, David.

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  Perfect.

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  He is the author of books including 1, 2, 3,

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  Absolutely Elementary Mathematics, and his forthcoming volume, The Perpetual Rose.

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  A native of Romania, Sergio Kleinermann is a professor of mathematics at Princeton.

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  In his own words, his current interests include the mathematical theory of black holes,

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  more precisely their rigidity and stability.

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  I'm reading these words without having any idea what they mean.

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  And the dynamic formation of trapped surfaces and singularities, close quote.

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  I'll ask you to explain a little bit of that maybe, Sergio.

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  The director of the Discoveries Institute Center for Science and Culture,

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