I agree with Shu_hunter, but there is one thing that bothers me. The whole thing about the gates knowing their own address. What if they don't know their own address, but every other gate does? Like, I don't know my name, but I know PTeppic's, Gypsy's, etc.? THey would know my name, but not their own. Therefore, all of the gates would have to be in contact at all times, but I still think that shu_hunter and I have it. I tell the Chappa'ai "Here are the coordinates, dial here." They dial there, and if no contact is made, the 7th (or 8th) Glyph locks. That would be the simplest theory. When I type in the address to this webpage, what would be the logic in my browser contacting EVERY SINGLE WEBPAGE ON THE INTERNET, when it could go directly to the webpage I requested? I think the Internet is a better anology. An address is required for both. Pick away.