While I do not usually cite the Bible, Matthew 7:5 comes to mind in certain respects.

Nuala, in general this thread has been unusually and perhaps unnecessarily restrained, to the point of lack of clarity. Let me put this positively: Bob Kenward never gives (as far as I know) the impression that he thinks of himself as more important than the session, and I have never seen him apparently give studied insult to particular participants.