
Originally Posted by
Mathman
About the 70% factor for under-rotation, that has a history, too. My memory is not perfect here, but I am pretty sure that in the first versions of the CoP there was no designation for under-rotations, just whatever negative GOE the individual judges wanted to apply.
Then the ISU went on a rampage against skaters who just threw any old thing up and called it a triple. The downgrade rule went into effect, where an under-rotated triple was downgraded to a double, then negative GOEs applied on top of that. This essentially took away the jump's entire score.
This was too draconian. A skater's entire fate lay in the hands of a whimsical caller who could utterly destroy the performance for errors that appeared to be minor to the audience, if the audience could perceived them at all. Meanwhile more visible errors like falls were given a pass, relatively speaking. So they moderated the penalty by coming up with the 70% rule for mild under-rotations. IMHO this has turned out to be a reasonable compromise.
They tried a similar approach with wrong edge take-offs for flips and Lutzes. Remember the ! and e? For some reason, unlike under-rotations, the idea of having the tech specialist call "mild bad edge" or "severe bad edge" didn't work out so well. They went back to the single call "e," allowing the judges to deal with it as each felt appropriate.
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