In a world in which the Cold War is a fading memory, North Korea and Cuba endure as museums of communism, so no one will forget how criminally insane it always was. In a world haunted by the specter of persistently falling prices, some countries are creating severe inflation, so we can be grateful for its virtual disappearance. One of the governments providing this public service is that of Venezuela, where the currency has lost so much value that even robbers reject it. A recent carjacking victim told The New York Times his armed captors had no interest in his...