Many Qinna techniques require mistakes from your opponent, such as leaving an arm out for too long after attempting a strike. In addition, they require great precision. Is Qinna useful in active fighting or sparring against experienced opponents or not? It seems to me (from all of the Qinna that I have seen) to only serve the purpose of punishing an opponent for an inexperienced choice, in most cases. In addition, much of Qinna is done standing and although the joint locks are painful, there are often very simple ways to escape them. With this being the case, Qinna would very rarely be able to be used in order to force a submission from a capable and experienced fighter. More often than not, I see these techniques as being useful in setting up a strike. However, due to their relative need for extreme precision, it often seems futile to attempt the lock in the first place, the smart choice to instead go directly for the intended strike. I honestly don't see Qinna as being useful against, say, a well-trained boxer. What is your opinion on the matter? What movements in particular do you find useful or useless?