You're on a nearly empty plane to Pyongyang, the capital of mysterious North Korea, and the only other passengers are a nuclear nonproliferation expert and a foreign-aid donor. What are you?
A. A Michelin restaurant reviewer?
B. A dotcom boss looking for high-tech computer software?
C. A retiree in search of a summer home?
Before you can say "None of the above," the answer, surprisingly, is B. Hermetic, borderline-sociopathic North Korea is going into the high-tech export businessand customers are buying. True, the trade is tiny and all the purchasers are from South Korea. But it's a start for a nation that was...