Thought this was an interesting article on the subject. http://melinas-two-cent.blogspot.com/2011/02/weve-just-returned-from-italy.html Assuming the summaries made are accurate the Europeans will now have a better idea of all the statements our American cousins make. For me a teacher ought to have some didactic viewpoint and atleast breakdown the dance into its components. As long as it is open and clear what they are meaning that is fine. A universal teaching not required or necessary. Leave it on the side in a milonga though. If you can dance in very crowded conditions in close embrace, does it matter what it is called? That is an ideal condition to reach in your tango journey.