I agree Kerplop, and that's where Ian Millar's Quote comes into play - of course we don't allow our horses to do everything they want, but as Upnover said:
Only to a small degree. My horse would love to cut off corners or fall in, but he's not allowed to. How many horses would pick work over lounging with their buddies eating grass? Even if they enjoy work, they still LOVE sitting around and eating. Doesn't mean my horse gets to be a bum. My horses have never missed a meal, a vaccination, a hoof trimming, a vet appt when necessary... I take great care of my horses, in exchange for them working for me. IMO, it's a fair deal. HOWEVER, it is also my responsibility to treat my horses well when they're working. Some horses simply do not want to jump. They will never enjoy it. They will never be successful at it. I don't think it's fair to try and make them jump. There are other disciplines for them to excel in. It is also my responsibility to be fair and train in a way that makes work a positive experience so that they don't get burned out or afraid of jumping. Can a horse get past this? Often, yes. With very very proper and correct training a horse can get over the fear of jumping. Rushing, refusing, and leaving the ground too early is caused by pain, fear, or plain bad riding/training. If you're looking at this horse to buy, I would pass. Maybe it'll work, but there's no guarantee. There are too many good horses out there to take a risk on something like her.
As what Ian Millar was saying, ties into this. While our horses have to work for us, there are limitations - where our responsibility comes into play, ensuring that we are doing it in unison with our partners.
As Reiner Klimke says " Our horses are our partners, not our slaves" and I agree.
But I also feel that Ian Millar was making a point of over use of gadgets, and making the horse move and work how you think they should - when we should be learning to ride how the horse needs us to, to get the best out of him/her.
That's what I take from it.