Humans are the ultimate rationalizers: once they decide what they want to do, they can always come up with a reason it was/is desirable or necessary for them to do it. Unique in the galaxy, humans have an entire profession dedicated to this rationalization, called "lawyers." The word "lawyer" has given many alien etymologists fits, because while at first blush it would seem to indicate people who work to administer the law, it actually refers to people whose primary function is twisting and perverting the law for a buck. "What's that blue sphere?" asked the first alien. "Stay away from there," said the second alien, "That's Earth, the Planet of Lawyers." "Lawyers?!" The first alien shuddered. "Why haven't we quarantined it?" "We're trying to, but our society will probably collapse before the law suits they filed to prevent that conclude."