I didn't even know about outside aids until I had a lesson on a Prix St George horse a few months ago, and now I'm training my green OTTB using outside aids, and it completely baffles me why more horses aren't trained that way. Obviously top level horses (jumping/dressage) are trained with outside aids, (you can see it and... they absolutely need it for balance) but I have a funny feeling that a majority of the 4' hunters are trained with inside aids... and why aren't outside aids stressed at all in the hunter world? Or maybe they are and I just haven't noticed...? Also, I understand why beginner lesson ponies/riders would be utterly confused by outside aids to start out with, but shouldn't there be a transitioning point for riders when they get to a certain level?
I'm guessing that if you were to make a list of the pros and cons for outside aids and inside aids that outside aids would have a lot more pros, so why does the english world use predominantly inside?
Sorry, there were lots of questions in those two paragraphs. I just never really thought about this topic.