On Jun 10, 2013, at 6:19 PM, David Morris <dwm@xxxxxxxxx> wrote: > I don't think there is another way to indicate you've reviewed a draft and > found no issues. Surely rough concensus must include confidence that > that silence means more than ignorance and I'm not aware of any mechanism > to evaluate the level of review exercised during last call. The expectation is that the working group gave the document sufficient review; the point of the IETF last call then is to backstop that review, not augment it. A document that receives no comment in IETF last call is assumed to have consensus.