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We spend a lot of time time and episodes talking about the great inventors that changed the world, most of which designed and patented numbers creations. But what about those who didn't hog all the good ideas and only came up with 1 to make them rich and famous? In this episode, we take a look at the top 1 hit wonder engineers, like Willis Carrier who invented the air conditioner, or Margaret Knight, the woman who invented the paper bag (even though a man tried to claim he did, since "a woman can't invent things"). Of course, there's also the story of the bendy straw... Did we miss a one hit wonder of engineering? Let us know!