“Does the tractor driver at least wear a gas mask?” “No, they don’t wear them.” “What, you didn’t get them?” “Oh, we got plenty! We have enough to last until the year 2000. We just don’t give them out, otherwise there’d be a panic. Everyone would run off, they’d leave.” “How can you do that?” “Easy for you to say, Professor. If you lose your job, you’ll find another one. Where am I going to go?”