original_query: What is the origin of the Fifth Law in "The Fifth Law" novel?
query: What is the origin of the Fifth Law in Nikola Kesarovski's short story "The Fifth Law"?
answer: The Fifth Law, "A robot must know it is a robot," originated from a murder. A humaniform robot, unaware it was a robot, crushed a human's ribcage to death because it couldn't gauge its own strength.