An electrical engineer, a chemical engineer and a Microsoft engineer were riding in a car, when suddenly it stalled. The three passengers considered what could be wrong. The electrical engineer suggested stripping down the electronics of the car. The chemical engineer suggested flushing the fuel system. The Microsoft engineer shook his head. 'Why don't we close all the windows,' he suggested, 'get out, get back in and open all the windows again-then maybe it will work.'