Three Engineers in a Car
An electrical engineer, a chemical engineer and a Microsoft engineer are driving along together in a car when it breaks down.
They discuss what the problem might be, and the electrical engineer decides it must be an electrical fault. They check the electrics and ignition system, but the car won't start.
"It must be the gas mixture " says the chemist. They check the carb. and air filter, but the car still won't start.
"I know" says the Microsoft engineer. "We need to close the window, get out, get back in, re-open the window and re-start the engine."
And it worked!!