In this story by Isaac Asimov, a scientist tells astounded colleagues a “tall tale” about how a new model robot broke the first and most fundamental of the Three Laws of Robotics: a robot may not injure a human being, or through inaction allow a human being to come to harm. The malfunctioning robot had escaped from its base and, upon encountering the man in a deadly zero-visibility storm, left him to die. Although the robot had a legitimate reason for its actions, the model was discontinued immediately. Themes include disobedience, protectiveness and “motherly” love.

In this story, Isaac Asimov’s favorite supercomputer Multivac has a big problem. It doesn’t respond to commands, and isn’t following its built-in program to self-diagnose the cause. As the global economy depends on Mulitvac, this could result in panic across the world. Teams of technicians have been trying to identify what is wrong for three days. Finally, a scientist discovers the “key item” needed to fix the problem. It is a simple thing that we are all taught to use as children. Themes include the dangers of Artificial Intelligence and/or relying solely on technology, scientific hubris, good manners.