4 Engineers get into a car. A Mechanical Engineer, a Petroleum Engineer, an Electrical Engineer, and a Network Engineer.
They go to start the car, and, nothing.
The Mechanical Engineer says, "Hey guys, we've got a bad starter, we're going to need to fix that before the car will start."
The Petroleum Engineer spoke up and said, "No No, we've got bad fuel, we'll need to drop the fuel tank, drain and clean it before the car will start."
The Electrical Engineer speaks up and said, "Guys, it's a dead battery. Don't over complicate things.
Let's swap it out and be on our way already!"
The Network Engineer is sitting in the back just listening to everyone argue about who is right, and finally speaks up and says,
"Guys, Guys! Why don't we just close the windows, get out of car, and then get back in, open the windows and try again?".