What Invention Deserves Way More Credit Than We Give It?

From the Billy Bookcase to the air conditioner, the gramophone to the stacks of paper we needed for the Guttenberg press to work, history is filled with important-but-overlooked inventions. Will and Mango spend this episode giving some less glamorous ideas their due (did you know a bag of concrete is one of the best weapons against poverty?). Featuring a big assist from economist Tim Harford.

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