That doesn't make sense for skating skills if the scale is meant to cover the whole range of skaters from those just beginning in learn-to-skate up to world champions.
You could have macro grades of what general test level/competition level a skater belongs at, but everyone who's entered in the same competition will have to have met at least some minimum skill level and in may cases they'll all be at exactly the same level on the macro scale.
Then you could have micro distinctions within each level to separate the skaters in the same competition from each other in relation to the standard for that level. That's where the decimal places come in.
I agree with that. IMO, this is the only way the PCSs can be viewed. But by the same token, having 40 gradations does make a mockery of the claim that these scores follow objective and well-codified standards.
I do not believe that the ISU can write down, in a clear and unambiguous way, what the difference is between a performance that deserves a score of 5.50 in Interpretation and a performance that deserves a 5.75.
In Gold Medalist's example of giving out grades in school, you
can do this. How many problems did you get right on the test? 93% to 100% = A, 90% to 92% = A-, 87% to 89% = B+. Or whatever. For that matter, you could let the percentages stand alone and have 100 gradations. No problem, and no burden upon the judge (the teacher).
This observation, however, is not a criticism of the New Judging System. The PCSs are essentially ordinals. Within each skill category, you give marks at the high end of the scale to the best performances and marks at the low end to the worst. In other words, ordinals.
Let's say its a novice competition, where you expect the skaters can do, say, a triple toe, a double Axel, a level 2 combination spin..., so that you expect the range of tech scores to be, say, 30 to 40. This corresponds to PCSs from 3.75 to 5.00. So, OK, the skaters whose presentation was best get 5.0, the worst get 3.75, with the others in the middle. The second mark.
IMHO no matter how we color it, the "performance art" side of figure skating, in common with piano-playing contests and the pie-baking contest at the county fair, is a judged sport. You win the contest by winning over the judges. I do not see any reason for figure skating to get all defensive about this fact and try to deny it.
Again, this is not a criticism, just (IMHO) a fact. As with a piano-playing contest, one pianist really is better than another, and we rely on panels of expert judges to render, well, expert judgment. (As fans, sometimes we agree with the judging panels and sometimes we don't -- that, too, is sport).