A computer salesman, a hardware engineer, and a software engineer are driving in a car together. Suddenly the right rear tire blows out, and the car rolls to a stop. Our three heroes pile out to investigate.
The salesman announces sadly, "Time to buy a new car!"
The hardware engineer says, "Well, first let's try swapping the front and rear tires, and see if that fixes it."
Replies the software engineer, "Now, let's just restart the engine, and maybe the problem will go away by itself."