I know someone whos job was wiring central exchanges for phone companies. Amazingly complicated down to the different twists of the wire telling you where and what the wire was for. You have 10,000 houses coming into an exchange it gets a little crowded. <br>That job was a job set for life. But he knew to get out when digital showed up. All that hung in got laid off years later. No exchanges are wired now. No such thing. <br><br>Windows may disappear faster than phone exchanges and the people who are doing the wiring are no dummies. The smart ones are bailing now.<br><br><br><br><br><br>