Andrew, Good points. Thanks for your mail. I will just briefly note that the key question is of course whether one believes areas are generally useful from the point of view of people participating in IETF work, despite the fact that they will necessarily have somewhat imprecise and soft borders. One practical value that I have found both as a participant and as a manager of IETF work, is (most of the time) finding the people who are in charge of a particular topic. For instance, if there’s a routing issue I know which ADs I can turn to :-) And they know it. And the participants know it. There are of course counterexamples, mostly relating to those soft edges. YMMV whether you believe those outweigh the clarity in other cases. Jari
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