This topic has made me think about some other causes that I have never considered, we have been talking about the conscious brain wanting to make the decisions, what about times it relies on the subconscious part of the brain like when driving a car at 70 mph in heavy traffic? You don't think about, braking, steering to change lanes, how much pressure to put on the accelerator, and many other things, through your learned experience your conscious brain allows the subconscious brain to do all those things without interference, your conscious brain is concentrating on and predicting what moves to make up ahead and expects the subconscious brain to do what it knows how to do, so why doesn't it happen when you play pool? You don't have to make all those snap decisions, the conscious brain believes it can control this because it's slower and risk of losing your life is non existent, it's right in one case, loss of life is probably not going to happen, but it's not slower, that is where the problem lies, it's actually way faster, you can the exact figures from Dr. Dave but the tip of the cue stays on the cueball for about 1/100,000 of 1 second, your whole shot relies on you having your cue in the PERFECT spot when you make contact with your tip AND it has to be on the near perfect line for you to pocket the object ball, and that will depend on how far the object ball is from the pocket and how far you are off from hitting the target on the cueball, rattling the object ball means you were close, I don't believe you can trick the conscious brain into believing there is danger in not stroking the ball correctly, maybe if you allowed some to punch you in the face hard every time you missed, probably not what I would try, the best thing is to learn to allow your subconscious brain to take over when stroking the cueball, is there one way that works for everyone? Nope, I wish there was a magic bullet, too many brains wired too many ways, but at least you can work on it and find what works for you, I am studying how the brain learns things, will add more when I can, I thank everyone who contributes to this thread, I'm learning too, I want to be the best pool player I can be.