"The Marching Morons" is a look at a far future in which the world's population consists of five billion idiots and a few million geniuses—the precarious minority of the "elite" working desperately to keep things running behind the scenes. In his introduction to The Best of C.M. Kornbluth, Pohl states that "The Marching Morons" is a direct sequel to "The Little Black Bag": it is easy to miss this, as "Bag" is set in the contemporary present while "Morons" takes place several centuries from now, and there is no character who appears in both stories. The titular black bag in the first story is...