In the many, many, many threads about of flutzes that we have had on this board, I was eventually convinced by those GSers who are actually skaters themselves that there really is such a thing as a "wrong edge takeoff" Lutz. That is, the inside edge/outside edge is only one of several distinctions between a flip and a Lutz. A wrong edge Lutz is not a flip. It is a Lutz with a major error on the take-off, and that is how it is scored in the IJS.
I do not myself know enough about jump mechanics to defend this point of view. But the best explanation that I heard (maybe GKelly will come to my rescue on this

) is that the most important determinant of the Lutz jump is the counter-rotation. That is, the skater's body turns in the opposite direction from the curve of the blade on the ice. This opposite curving is achieved by the long entry on the outside edge. If you switch over to the inside edge at the last moment you are guilty of releasing the counter-rotation prematurely. This carries a -2 GOE in the ISU scoring system, but does not turn a Lutz into a flip for scoring purposes. The technique for a flip is completely different.
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