Thin Man (nuclear bomb) and the name came from the Dashiell Hammett detective novel "The Thin Man" and series of movies by the same name. The "Fat Man" bomb would be round and fat and was named after Sydney Greenstreet's character in "The Maltese Falcon". "Little Boy" would come last and be named only to contrast to the "Thin Man" bomb. Oppenheimer assembled a team at the Los Alamos Laboratory to work on plutonium gun design that included senior engineer Edwin McMillan and senior physicists Charles Critchfield and Joseph Hirschfelder. Critchfield had been working with sabots, which Oppenheimer believed would be required by the
Ballad of a Thin Man at that time. Obviously there must have been a tremendous amount of them for me to write "that" particular song. It was like, 'Oh man, here's the thousandth Mister Jones'." In the John Lennon-penned Beatles song "Yer Blues", Lennon describes the character as feeling "suicidal, just like Dylan's Mr. Jones". Dylan critic Mike Marqusee writes that "Ballad of a Thin Man" can be read as "one of the purest songs of protest ever sung", with its scathing take on "the media, its interest in and inability to comprehend [Dylan] and his music." For Marqusee, the song became the anthem of