I have not said that we try to keep a speed chart that shows the average relationship between one and two turn races (which is what a speed chart does) because the relationship changes constantly, at all tracks.
Your example about the Carson Citys is a good one. But what would usually happen is that one or more horses would be able to handle the distance (some CS do, the TGI is again an average), and most would not. You would get an extreme spread in the figures-- you wouldn\'t get the kind of thing you got with the Belmont figures, where they fell into line so tightly for so many horses-- and I would deal with the race accordingly, giving most bad numbers. And by the way, when a race collapses the way you indicate, it usually shows up in the fractions.
Those who are used to making figures using speed charts and pars, without wind, weight and ground, don\'t get what we do here. Those guys are almost invariably just looking at the winners, where those of us using the \"projection method\" are looking at all the figures for all the horses, after those figures have been fine tuned with the variables. (And by the way, I think the term projection method is responsible for a lot of confusion. It implies we are projecting our opinions of what the horse will run-- and while all figures are subjective to some degree, we don\'t, and our way is no more subjective than one that simply uses pars and averages. The subjective decision there-- an incorrect one-- is to use just the winners against pars, and then use averages. We use all the horses that ran in THAT race).
Finally, this-- ALL speed charts are based on a relative, not absolute scale. It goes to how they are arrived at to begin with-- by looking at the average time horses run at different distances, a relative question by definition, and one that might be answered differently now than 50 years ago, or 50 years from now. But the way a figure maker knows whether his figures are right TODAY is by how tight they come out, over lots of figures for lots of horses in lots of races. You can\'t make that work out unless the figures you are using to make your decisions are right. And if you try to add or subtract even a point or two from the Belmont figures you will see what I mean.