"Airplanes are cramped, jammed, hectic, noisy, germy, alarming, and boring, and they serve unusually nasty food at utterly unreasonable intervals. Airports, though larger, share the crowding, vile air, noise, and relentless tension, while their food is often even nastier, consisting entirely of fried lumps of something; and the places one has to eat it in are suicidally depressing. On the airplane, everyone is locked into a seat with a belt and can move only during very short periods when they are allowed to stand in line waiting to empty their bladders until, just before they reach the toilet cubicle, a nagging loudspeaker harries them back to belted immobility. In the airport, luggage-laden people rush hither and yon through endless corridors, like souls to each of whom the devil has furnished a different, inaccurate map of the escape route from hell. These rushing people are watched by people who sit in plastic seats bolted to the floor and who might just as well be bolted to the seats. So far, then, the airport and the airplane are equal, in the way that the bottom of one septic tank is equal, all in all, to the bottom of the next septic tank."