A mechanical engineer, a geology engineer, a chemical engineer, and an IT went out to lunch. On the way back the car shaked and engine died.
The driver, mechanical engineer, pulled over and said "there must be something wrong with the battery".
The geology guy said, "I think there was an earth quake".
The chemical engineer said, "I think there might be water in the gas tank".
The IT guy, who is the smartest said, "we should look for solution, not keep guessing about the problem".
Everyone asked "what do you think?".
He said: "first of all, let's all get out of the car, get back in, and start the engine". Hint: rebooting