Search for the definitive definition somehow made me think of the song "Little Boxes" (on the hillside, little boxes made of ticky tacky. Little boxes, little boxes, little boxes all the same). And of dancing classes in my childhood, where every child had to do exactly the same step to the same beat and with identical arm weaves and dips and the mandatory frozen smile.

"Should such a definition become widely accepted, it would certainly serve to cut off any further development of the form." That seems to be exactly what some are trying to do--- and cut off the roots as well.