Protocol Quotes
Both Penang and the Internet were established basically for strategic military reasons. In both cases, what was built by the military was merely a kernel for a much vaster phenomenon that came along later. This kernel was really nothing more than a protocol, a set of rules. If you wanted to follow those rules, you could participate, otherwise you were free to go elsewhere. Because the protocol laid down a standard way for people to interact, which was clearly set out and could be understood by anyone, it attracted smart, adaptable, ambitious people from all over the place, and at a certain point it flew completely out of control and turned into something that no one had ever envisioned: something thriving, colorful, wildly diverse, essentially peaceful, and plagued only by the congestion of its own success.
Neal Stephenson
Most of what we get up to in the Laundry is symbolic computation intended to evoke decidedly nonsymbolic consequences. But that's not all there is to...well, any sufficiently alien technology is indistinguishable from magic, so let's call it that, all right? You can do magic by computation, but you can also do computation by magic. The law of similarity attracts unwelcome attention from other proximate universes, other domains where the laws of nature worked out differently. Meanwhile, the law of contagion spreads stuff around. Just as it's possible to write a TCP/IP protocol stack in some utterly inappropriate programming language like ML or Visual Basic, so, too, it's possible to implement TCP/IP over carrier pigeons, or paper tape, or daemons summoned from the vasty deep.
Charles Stross