The Recurring Case of 'Recursion': a vital pattern for making sense of the world


Some call it "self-similarity." Others define it vaguely as "wheels within wheels" or refer to the image of nesting Russian dolls. For such a fundamental concept, recursion is strangely less famous and more often overlooked than it deserves to be. With help from a cognitive scientist, a language expert, and a physicist, Paul Kennedy tries to remedy this state of affairs, without getting himself tied up in knots within knots within knots…

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