See if it happens again

A systems engineer, mechanical engineer, and a software engineer are in a car careening down a mountainous road without brakes. The driver is furiously pumping the pedal while he steers the speeding car around the treacherous turns - stones flying and passengers gasping. Finally, he finds an incline and the car coasts to a stop. All three get out and, thanking their lucky stars, begin to assess the situation.

"Oh," says the mechanical engineer, "the brake lines are leaking - lets patch the hole, bleed the brakes and be on our way!"

The systems engineer said "maybe we should consult with the manufacturer and the dealer to ensure that is really the problem."

The software engineer said "why don't we get back in and see if it happens again?"