A mechanical engineer, an electrical engineer, and a software engineer are carpooling to work. They're just getting on the freeway when the car they are in suddenly stalls out, giving them just enough time to get over to the side of the road.
The mechanical engineer says "it's obviously a mechanical problem. We'll have to get out and take a look at the engine..."
The electrical engineer says " no, no it's not. It's an electrical problem. We'll need to get out and trace the problem out until we discover a discontinuity or a short..."
The software engineer says "I know, let's just get out and get back in again..."
