Have to disagree with you here - I think that Yuzu and Javi have shown that once you are confident in the jumps, you can develop as an artist and/or performer. Perhaps neither is a Toller or a Curry, but Yuzu's skating skills have improved leaps and bounds over the past 4 years, and Javi can play a character and charm and audience very, very well. Just seeing the development from his semi-awkward Barber of Seville to his Sinatra program is

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I don't like the idea that artistry is a "gift" only to the select few. You can work your butt off to improve your skating, your attention to choreography, and your ability to interpret it. Of course, your development of jumps versus artistry will depend on how much you practice, and there's only so much time in one day. Once you've "mastered" one thing, you obviously still need to practice it, but you can devote more time to the stuff you still need to learn. And the younger you learn something, whether it's a quad lutz or Patrick Chan skating skills, the easier it is to do later on. But what part is going to be harder to develop the older you are, the jumps or the PCS stuff? Whatever the answer is will in part determine what it is skaters should be working on, and when.