This code evolves sentences given only a number that rates how good its guesses are. The idea came from a example (Wikipedia page) given in "The Blind Watchmaker" by Richard Dawkins. Each letter in the sentence simulates a single gene in an organism that mutates over time. There are other programs out there that do the same thing and are listed in the wikipedia page. Its often called the weasel simulator because the goal string in the book was "Methinks it is like a weasel".