General, your tank is a powerful vehicle It smashes down...

General, your tank is a powerful vehicle It smashes down forests and crushes a hundred men. But it has one defect: It needs a driver. General, your bomber is powerful. It flies faster than a storm and carries more than an elephant. But it has one defect: It needs a mechanic. General, man is very useful. He can fly and he can kill. But he has one defect: He can think.