With horses, just when you think everything is going great, something happens to slow you down.  Is that a corollary to Murphy's Law?  For example, I find a great trainer, the horse is doing super in training.  Then the hay changes.  For whatever reason, the timothy is now grass (not timothy even though the feed store will argue that until you are blue in the face). Although the hay is  green and the horses love it, the horse in training is constantly clearing his nose.  Clearly some kind of allergic reaction.  Now, instead of proceeding full speed ahead, you have to call the vet, do a treatment, try to figure out what hay he can (eat with out snorting) and is willing to eat (due to flavor, texture, smell, and whatever other criteria horses place on their dinner.)  And while you are figuring this out, bam, full speed ahead slows to a snail's crawl. 

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