A cell phone is one of the highest utility-per-unit-cost items in existence. They are so useful that a person could conceivably choose to keep a cell phone and

A cell phone is one of the highest utility-per-unit-cost items in existence. They are so useful that a person could conceivably choose to keep a cell phone and phone service in preference to a permanent housing arrangement. You can sleep in a lot of different places, if you can respond to your e-mail, or pick up the call extending the job offer, wherever you happen to be.