On 7/7/2018 5:05 PM, Vint Cerf wrote: > I was only making the point that the same mathematical models work for > both cases. Ack. Tnx. And it added to my long-time assumption that from a macro-view they can be seen as similar, although the engineering differences can make a significant operational different. (theory, practice, ...) d/ -- Dave Crocker Brandenburg InternetWorking bbiw.net