« Once upon a time, there was a little girl named Emma. Emma had never eaten a banana, nor had she ever been on a train. One day she had to journey from New York to Pittsburgh by train. To relieve Emma’s anxiety, her mother gave her a large bag of bananas. At Emma’s first bite of her banana, the train plunged into a tunnel. At the second bite, the train broke into daylight again. At the third bite, Lo! into a tunnel; the fourth bite, La! into daylight again. And so on all the way to Pittsburgh. Emma, being a bright little girl, told her grandpa at the station, “Every odd bite of a banana makes you blind; every even bite puts things right again.” » ~ N.R. Hanson, “Perception and Discovery”, 1969.
December 14, 2010