so the wg chairs do not feel that they have the power to say "this
document will not fly unless X is done." so they say things such
as "unless X is done, it will not get past the iesg." they pass
the buck because
o they feel they don't have the power
o it's easier
Note that per 2418, chairs *don't* have the power to block documents.
The chairs' role is almost completely process-oriented. I suppose that
with a very strict charter, he or she would have some content leverage,
but we've basically relied on WG consensus for content.
I believe that's one of the things where 2418 got it wrong, and where
practice has not been according to 2418 when things worked well.