An engineer creates the smartest AI in the world. To test it he lets his nephew try it. The boy asks ""Where is my father?"" After a couple of seconds the computer answers ""Your father is at the Niagara Falls with a friend"" The kid turns to his uncle and says ""Uncle, this computer is broken, my father died 2 years ago"" He then says ""Well let's ask a more specific question then!"" The kid goes to the computer and asks again: ""Where is my mother's husband? "" The answer comes ""Your mother's husband is dead. But I already told you. Your father is at the Niagara Falls with a friend!""