Hungarian author Frigyes Karinthy was sitting at his desk trying to decide between writing a long-projected monograph on modern man or polishing up a new play, when he was disturbed by the roaring-so loud as to drown out other noises-of a passing train. Before long it was gone, only to be succeeded by another. And another. But, Karinthy thought, it had been years since there had been trains in the streets of Budapest. Only then did he realize he was suffering from an auditory hallucination...
