The human has ALL of the responsibility of merging his body and its movement to that of the horse, its every twitch to completely follow and allow ALL movement of the horse beneath him up to and including his breathing.  The space where we place no force, no weight, no interference, no resistance or hindrance to the energy of the horse. An incredible challenge to each of us.  This is us becoming them.
 
This is us becoming them.
 
I think that is what everyone misses. 
 
We climbed aboard or work with them from the ground, thinking to take charge, not thinking we have to give up of ourselves.  That this is not about the horses giving themselves up to us, but us giving ourselves over to the shape, form and energy of the horse.