Three engineers are driving down a country road. The engine shudders and stops, and the driver coasts the car onto the shoulder and puts the car into park.
They sit in silence for a moment before positing their theories--
The electrical engineer says, "This is definitely electrical. Probably a problem with the wiring harness--"
The mechanical engineer says, "No, no... the rattle of the engine tells me this is a combustion problem."
The software engineer replies, "Either way, the first thing we should do is get out of the car, close the doors, and get back in again..."