"In my twenties I was in Austin, Texas, finishing up yet another degree. I'd always loved hiking and, sick of the sedentary life of academia, I'd joined the orienteering club at the university. The sport, which originated in Sweden, is a competition in which you use a special map and a compass to navigate through wilderness you've never seen before, stopping at checkpoints to have a control card physically or electronically stamped. The first competitor to hit the "double circle"--the end of the route on the orienteering map--is the winner. I"