“The most expensive single undertaking of the Second World War was the B-29 Bomber, the Superfortress. The second most expensive was the Manhattan Project, the massive, unprecedented effort to invent and build the world’s first atomic bomb. But the third most expensive project of the war? Not a bomb, not a plane, not a tank, not a gun, not a ship. It was the Norden bombsight, the fifty-five-pound”
―
Malcolm Gladwell,
The Bomber Mafia: A Dream, a Temptation, and the Longest Night of the Second World War