if gap between blade and ice is so crucial to jump definition, then jump starts when this gap appears. Until that it's just an entry to the jump.
And the advantage in this approach is that it's very easy to identify it (good definition), but 'moment when losing weight process begins' is very obscure (bad definition).
It's not what I meant at all. Jump consists of many phases where blade should touch the ice. Preparation, entry, picking phase, prerotation phase, landing phase. However there should be some air gap eventually between blade and ice among these phases - to qualify this as jump. Your initial "what if" example didn't include that air gap.
Skater does 2 full turns on the ice before gap between blades and ice appears and then make another 2 turns in the air. Is it quad? According to your definition - yes.
According to my definition - no. Pls read me carefully. I said that movements on ice until start of losing weight is counted as entry (i.e. not added to rotations count). You can't lose weight on blade during 2 full turns on ice - it's physically impossible.
And the advantage in this approach is that it's very easy to identify it (good definition), but 'moment when losing weight process begins' is very obscure (bad definition).
Well, considering Earth as centre of universe or planets having perfectly circular orbits is very easy definition as well. Does that mean this definition is close to truth though - or maybe difficult and obscure ones are more closer to truth?
Are you ok with applying this logic to stealing money from your pocket? "There is no point to talk about stealing money from pocket if degree of stealing is limited"?
Yes, I am ok with it ) If a thief was able to put his arm in my pocket - he would take all money there is - not just part of it. If it's just part I lost from my pocket - I wouldn't think it was theft but some miscalculation I did or payment I forgot about.
"Stealing" turns should make jump easier - else it wouldn't be stealing, right? The more you steal - the easier it should get. However you can't consider prerotation as stealing because it's not like that at all - there is unavoidable point when prerotation instead of help becomes hindrance. Which means it's not stealing but something else.
There are lot of examples when prerotated jumps still are not done succesfully despite them presumably being easier whereas jumps in classic technique are done successfully. If you watch nonEteri skaters with prerotated jumps - you should notice they have big amount of problems with jumps despite them being prerotated. It seems whole training process is more important for stability than technique.
Also, even skaters with classic technique tends to do toeloop jumps in combos
prerotated (contrary to single 3T - which usually are less prerotated). Prerotation is not some awful cunning trick skaters are trying to get away with hiding it from judges - like you want to sell it here. It's pretty normal, obvious, mundane and unavoidable way to do jumps when you don't have enough speed, for example. Which is exact case with combo jumps. Such jumps shouldn't be penalised unless ISU wants to make combos eternally negative elements. And if so -
any prerotated jump shouldn't be penalised or its rotation considered as "stolen".