I should probably wait until I actually read the book, but I couldn't resist the rare thread where my entry might be among the shortest.

Fortias agree with TH's problem with the Sartin approach, which he says is fundamentally flawed, & instead is arguing that consideration of a horse's overall development should include its entire pace profile(variant-adj. Sartin figs) as well as its final figs, since one can thereby get a better read on its current & likely future condition,which he believes is the factor which should be given the most weight in the vast majority of races.