Until people (particulary Beyer & Crist) begin to accept the concept that horses are getting faster, there is little hope for significant change. Pick a sport, any sport, and there is conclusive evidence that performances are improving over time. To suggest otherwise for Thoroughbred horseracing is lunacy.

At some point performance begins to run into physical limitation. It's conceivable (at least to me) that TG Neg #'s and regression off of them offers the most conclusive evidence of this.