May Contain Lies review: How to cut to the truth and think smarter

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Facts communicated over social media are often made to fit an existing narrative to go viral

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May Contain Lies
Alex Edmans (Penguin Business, 25 April (UK); University of California Press, 14 May (US))

Here is a logic puzzle. You have been given four double-sided cards, each with a number on one side and a letter on the other. You are told to test this: “If a card has a vowel on one side, it has an even number on the other side.” The cards, as dealt, read “E, K, 2, 3”.…

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