You have all these people in the city and everything has become centralized. If you live outside the city and you need a birth certificate or some official paper from the government, you have to travel to the city.
We never had planned to hijack a ship. We never thought of any war plans outside the Palestinian lands. We wished that the program had not failed and then the warriors could have achieved their goals.
The humor is essentially dark for a cartoon and sophisticated. But at the same time, being a cartoon gives the writers more freedom than in a normal sitcom. It always pushes the line that, despite human failings, the Simpsons are really decent people.