::: I think it's more that the two different things happened about the same time - there were improved training methods AND handicapping of races was introduced. I'm open to suggestions on better wording, of course. Wall isn't very specific on what the training methods were, so perhaps just dropping that part would be best? After all, the various trianing methods of race horses have changed greatly over the whole period of racing - in the end the introduction of handicapping is much more significant than a change in training.  -