Hookay. So, you think that this M3 sub-machine gun—with a shoot-first-and-ask-later curved barrel—is a really stupid, really dumb invention, right? I don't blame you. But, trust me, you don't know what really stupid, really dumb inventions are. Yet.
I just saw a selection of 30 dumb inventions in Life, and I couldn't resist picking my favorite ten. These things are so damn stupid they became obsolete before even becoming real products. It was hard to choose. After all, how could I leave out scientology nutcase L. Ron Hubbard and his Hubbard Electrometer, which in 1968 made him reach the conclusion that tomatoes "scream when sliced"?