A physicist, an engineer and an IT guy are driving along in a car... Suddenly, the engine makes a spurting noise, turns itself off, and the car comes to a halt. The physicist says ""No need to worry, my friends. We are on a descent, and the degree of incline means I can get out and push the car with enough force to get us back in motion"". The engineer answers ""No, dear friend, it is most likely an engine failure. Most probably a dead spark plug or a faulty drive belt. I can get out, open the bonnet and get it fixed in no time"". The IT guy, who was silent up until this point, exclaims ""Hey, guys, guys! What if we all get out of the car, and then get back in again? Maybe it will work!""