As the U.S. war effort ramped up in the early 1940s, the Navy put out a request for chair design submissions. They needed a chair that was fireproof, waterproof, lightweight and strong enough to survive a torpedo blast. In response, engineer named Wilton C. Dinges designed a chair made out of aluminum, bent and welded to be super strong.

To show off the durability of his creation, Dinges took it up to the eighth floor of a hotel in Chicago, where the Navy was examining submissions, and threw it out of the window. It bounced, but didn't bend or break.

And so the Navy gave its inventor the contract, and he, in turn, opened a factory and called new his business the Electrical Machine and Equipment Company, or: Emeco.

Over the decades the Emeco Navy chair became so popular that companies began to copy it. There are now tons of knockoffs -- fakes. Last month, Benjamen Walker of Theory of Everything walked 99% Invisible Host Roman Mars around New York city, pointing out real and fake Emeco chairs.

77 Steps

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