Remember venomous snakes to guard diamond crown? To really bite to eat. To protect her from the poison that is able to steal the crown! Day has changed. Instead of a dog to guard the house has electric gates. Instead, the closed-circuit camera security guard. And why worry about protecting valuable snakes? The knife came continue functioning robot excelled.
Robots do not understand the human condition? No robot could be dangerous with which one can again be modest? Thus, the robot is able to drive a knife presented a robot scientist.