ABSTRACT
There is an unlovely unfairness in getting so deep, exciting, and thought-provoking feedback and a feeling that a “real” discussion is about to begin at the moment when the discussion is in fact over. It is too late to rewrite the chapter completely and it is impossible to deal in this short response with all the fascinating questions raised in the commentaries. After some agonizing on what we should and should not reply to, we decided to single out the following handful of issues.
