The only good to come from cell phones

[Galt]

I think he meant: If you are both meeting somewhere, say at a fun waterpark, rather than planning 2 days ahead of time to meet at the main entrance (thereby missing out on fun while waiting) or picking some arbitrary place to meet, you just call each other when you arrive. "where are you? I'm at the Cyclone." "Oh, I'm at Hurricane Alley, I'll meet you at the fried dough stand in 10 minutes." "Aces!"