See, if you put another word between BIM and Model, no-one will speak of animal cruelty…
If you are ever looking for a diagram of the maturity model:
Image via http://revitstickynotes.blogspot.com.au/2012/04/revit-ifc-plugin-by-geometry-gym.html
where credit for the image is given to UK Government BIM strategy document
The credit of the original production of the Diagram, I believe, should go to Mark Bew and Mervyn Richards.
Haven't found though were did the diagram get published for the first time