To oversimplify a bit, a circuit switch opens up a dedicated line between you and that fellow you're talking with 1, 200 miles away.

FORBES: Survival technique: paranoia

"When you're disoriented because you're out of breath and tired and you think you're one mile away, you could be potentially three or four miles away, " Muir said Wednesday afternoon.

NPR: 1 Calif. Hiker Still Lost, 1 Found And Recovering

One possible explanation: According to this reporter's smartphone GPS app, if you use the official bike parking lot, you're still a 1.7-mile walk to the handball arena and 2.4 miles away from the basketball arena.

WSJ: Menu