urge, i have seen alot of videos like this and it always bugs me! i taught my first horse how to just be ridden with a rope around his neck, we jumped and everything... now i just taught my second horse how to do that... she is a third level dressage horse I(haha although i cant to the third level movements yet!) but i also ride her in a snaffle bridle, the bit is the second fatest in the store (the fatest was to thick she couldnt close her mouth completely) she is happy both ways, the bridle is just another way of sending messages to the horse, small little messages, not like the ones in that video! but i do know a person that rides at first level like me and she will randomly choose to use a double bridle some days, which really makes me mad, because she pretends to know everything, and is all 'oh i use a double bridle, im so good' and it really makes me mad because when she rides her horse and gets mad she will yank on the horses mouth, not just a little pop to tell them no, a bunch of huge yanks that makes the horse freak out because shes pulling on all four reins!!! and the horse is very good, he just makes a little rear (if you can call it that) and accepts...but he doesnt trust her hand, sso he will neer be happy going into the bridle for her, but when a horse does trust somebodys handand and know they will not be hurt from it thery are happy.
If there are no horses in heaven... im not going.