For a second I thought the robot had exploded. That little ten-credit coin had taken hours to construct and every minute was worth it. Centuries of research have produced drugs that can simulate any mental condition in the user. Impossible, the robot said with mechanical surety. Whats next on the program?Psychological reorientation, lobotomyor just plain firing squad?None of those. That is the last word that will be said on the subject. As he said it I pressed the button that set off the charge of black powder in the ceiling, the crossbeam buckled and the three ton safe dropped through right on the top of the cops head. This time I made sure the alarm was disconnected before I went through the door.