Still, this is not anything new, it's just how sports develop in general. Cecilia College landed the first ladies. double jump in 1936. Then a few more did it. Then more, Then everyone was doing it. Then someone did a triple. Then more skaters did triples. then even more, until you had to have an acceptable arsenal of triples to compete. Then someone did a quad...
Sooooorry for the suuuuper slow reply, but sometimes life etc.
That is certainly one way of looking at it - a simple linear evolution. However, the processes are hardly ever that straightforward and simple. There are all kinds of circumstances that inform and sometimes affect the outcome.
Rules and regulations were perhaps not limiting jumping in the free programs until the 1980s when the Zayak rule came to be, but the unwritten rule of perfection probably slowed down the jump development somewhat - you would not try anything new and daring in competition until it was pretty solid and consistent. Officially, triples started to get attempted and landed in the 1950s, but there is indication that some skaters were doing them already just before the WWII - a decade of delays? (Stevens's book Technical Merit mentions a possible 3S already in 1939.) Not to mention a generation of talented skaters lost in the war...
Officially it took 26 years to get men's triples landed, from Dick Button's 3Lo in 1952 to Vern Taylor's 3A in 1978. By 1978, multiple triples, usually 3T, 3S and 3Lo, were part of most elite men's jump repertoires and some were doing also 3Lz and attempting 3A. By the late 1980s, I think quite a few elite men had all six triples consistent enough to put them on competition ice.
We know actually quite a lot about the early history of quads before anyone tried them in competition and most of it is from North America. In a way, then Fadeev, a Soviet skater, getting the first attempt is kind of surprising.
After that and the first good one in 1988, the quad was really not a big hit until the late 1990s - it could have basically just gone away even for men. But whatever happened around 1996-97, things changed quite quicklyand the quad really became the next step in tech evolution.
Yeah, except then ISU started to rule jumps with a stern hand and the 2000s saw another slow period. If they had continued with the early IJS judging, they might even have killed the quad...
The 2010s rule and scoring changes enouraged risk-taking and movement towards increased variety in jumps and that has resulted in what we see happening now. But it took 35 years from the first successful quad to the moment when someone had all of them and probably for the time being that will be just Malinin. I am curious to see whether in about 10 years time there will be a bunch of skaters who have all six quads and will be able to jump them in competition as well as triples were jumped in the late 1980s.
And with women, I don't know what to think really. What looked for a moment like getting 3As and quads as staples also in women's jump repertoire seems to be going away. There are many young Russian girls going for it and I am really curious to see how many of them - or if any - will be able to maintain a quad when they're seniors.
So, not so simple linear evolution, but rather fairly complicated paths from the first time to becoming commonplace.
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