> If I read your post correctly you have just restated the Heisenberg uncertainly principle.

I guess you read the first line; which is about the Algorithm in the article. And yes it reminded me of the Heisenberg principle as well (perhaps they have a Heisenberg compensator?)

> but note a network has busy times and slack times an algorithm to predict the ebb and flow of network traffic should be possible.

You, as are they, are makeing a very dangerous assumption; namely that previous behavior is a good indicator of future behaviour.Most LAN traffic displays self-similar behavior, ie its a bit fractal. Which means that it is hard to predict the behavior over short and long time scales.

I suspect that they do most of their maths on averages (to avoid sticky problems). With averages you cant see as much detail (as you throw it away when you average something) - so predictions are easier. However, I am still not convinced about how well it will work...

Anyway! The point of my post was about why optimizing throughput (which is what they say they do, however they do it) gives you QoS...