I cant argue with what you post. Your opinion is one I have nothing but respect for and look forward to reading.Trust in your stroke is paramount to high level performance on the table. There are only two ways to miss a shot...poor alignment or poor stroke. For many students correcting stroke errors leads to better alignment (as alignment is perceptual, and people perceive things in different ways). I'm not going to argue with Colin, Pidge or anybody else, but in my experience, stroke errors contribute to missing far more often than alignment errors. People who come to me with perceived errors in aiming, cannot move the cuestick in a straight line...especially on demand, under pressure, in one try! Now I certainly agree that the eyes can play tricks on our perception, but I use a different way to help a student find their "vision center". I agree with what Neil has proposed and presented.
Scott Lee
http://poolknowledge.com
I think what you say about alignment needs a little adding to it. I don't think alignment is purely a visual concept. I feel it is as much to do with hand eye coordination as it is to do with the physical ability to align yourself onto the correct line. It works in 3 parts I always tell people. First is the visual aspect. Being able to visually see where your body needs to be and the cue needs to be to have perfect alignment. The second is hand eye coordination. The ability to get the cue and body onto this perceived line. The next is the physical ability to keep it there throughout. Moving through the process or pushing the cue off line when you make the final drop is what screws most people up. In snooker, I see it all the time with people dropping right down and either the chest pushes the cue off the line slightly, or people bring the cue to touch the chest - both of which throw the cue off the intended alignment. The only way to correct this properly is to get up and start again. People tend not to notice that the cue has gone off line because they can only see a small portion of it at this point so then they correct the poor alignment by cueing across the white to throw it in the direction needed to make the ball, this is why people think its a bad stroke when they miss.
The only time I can say in snooker a the majority of misses are due to stroke is when using a rest...or bridge as you guys call it
Alignment is very easy with a rest because you can see the entire cue and what line its on. But, people struggle with stroke using it because its not normal. I see people miss the pot and wonder why. Then I introduce them to a measles ball using a bridge and it becomes obvious with how much unintended spin they've generated.