Flat Tire? 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. The three men pile out to investigate. The salesman tsk-tsks sadly. "time to buy a new car!" He announces. Says the hardware engineer, "well, first let's try swapping the front and rear tires, and see if that fixes it." Replies the software engineer, "Well, first let's just try driving the car again, and maybe the problem will go away by itself."