I one time sent a message to a thread where a bunch of non electrical engineers were arguing about something electrical. I said, "Just setting here shaking my head." It then became an attack Cowboy thread. I can't believe these guys think that their uneducated opinion has any merit. I read a few guesses about GPS (BTW, I knew it as "Operation Transit" back in the day!) and I quit reading. I see that it is still going on. I am just shaking my head. But don't you tell anybody!