Computer Programmer and Mechanic Driving

A computer programmer and a mechanic were driving down a steep mountain slope. The brakes stop working. The car careens out of control and scraps the guard rails. They make it safely to the bottom of the mountain and pull over. After recovering, the mechanic says, "The brakes must have gone out." The programmer says, "Lets turn the car off, back on, drive it up the mountain and see if it is repeatable."