"I insisted that we used distributed control – I wanted to be sure that no one node controlled the entire network. It was too vulnerable; it would be too loaded, too busy, and very inefficient. So the idea of distributed control came out of my desire to look into large network design,
and that was exactly what we needed to launch something as big as the Internet."
-Leonard Kleinrock, 3/13/13
In order for a distributed network to be possible, a method called packet switching replaced circuit switching.
"…the real underlying change was packet switching for which I was the primary designer and founder. Len Kleinrock provided me with the theory to understand queuing and be sure I could make it work."
- Larry Roberts, 3/21/13
Packet switching is the foundational concept behind computer networking. Without it, networks would be completely inefficient, and there would be no Internet.