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Originally Posted by miraja2
I'll probably be accused of belonging to a "little clique" for posting this, but I happen to think that this chart tends to confirm what I already believed regarding DI. It is basically useless in this regard.
Is there a trend in the numbers? Sure, but only someone with very little knowledge of statistical analysis would look at this chart and argue that it proves that DI is of any use whatsoever.
If you took an average handicapper with a moderate amount of pedigree knowledge, and asked him or her simply to assign every horse a DI-type number by looking only at the names of the horses in the first two generations, I am confident that the long-term chart numbers would be similar (like DI, there would be an obvious relationship, but not a particularly insightful one).
In terms of determining stamina, I think most people agree that DI is pretty pointless.
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Fine. Many agree with you. But if my mare is by Alydar and on the other side of that mare has Tom Rolfe, its kind of obvious that this isnt just cheap speed. No?