There is only so much time in a day Gavin. You have not answered any of my questions. This article has only one or two sources. That is not good. Any changes I added were to base future, hopefully soon, references on; I have no intention of leaving it that way. I am dismayed that the '22 points' which you regard as sacrosanct, I think is both unwieldy and largely unsourced, is even in this article. Where does it come from? please let us collaborate I do not want or seek an edit war. I have now collected a range of good new sources today which I shall endeavour to reference into the article. There are also many sub-topics not yet included in this article, such as frictions, roles, encroachment, and demarcation within professions. These need to be added in as this is supposed to be an encylopaedia. Can I count on your cooperation or disagreement? I do not think undoing previous edits is the way forward at this stage. Let us cooperate. thank you Peter morrell