Relaxing in a comfortable seat, reading a book and listening to 
some mp3 stored on your pod or your pad, your eyes are getting 
heavy, you adjust yourself slightly in the seat, getting slightly more 
comfortable, your eyes get so heavy that you can't hold them open, 
and you doze off.
Your seat is #24-B in a passenger jet in straight and level flight,
cruising in calm air 35,000 feet above the ground, taking you to 
visit your grandmother on the coast, at 500 miles per hour.