IF - Robot
"Why would someone design a robot to be a criminal?" The answer is a complex and paranoid robot plot. Humans design and build robots that develop higher intelligence. They see humans as imperfect and decide to destroy the obsolete life forms. The robots do eventually learn that chaos is a necessary part of existence, but only after all the humans are gone from the perfectly dull robot cities. So to spice things up the robots start to design robot disturbers to give jobs to all the out of work Police-Bots, and Lawyer-Bots. It's sort of like when the Terminator learns to say "talk to the hand."
Do people still say that?