A mechanical engineer, chemical engineer, electronic engineer, and software engineer are driving in a car. The car suddenly dies. The mechanical engineer says, "I would suppose that a gear or pulley failed, causing the car to die. The chemical engineer says, "I guess that the car is out of fuel and unable to produce combustion." The electronic engineer says, "I believe the windings in the coil fails to produce enough spark." The software engineer says, "I think we should all get out and then get back in again."