Why do you equate someone talking about an aiming system to that must mean any other way is wrong? Do you realize that there are DOZENS of aiming systems out there? The only wrong system is the one that doesn't work for YOU. Likewise, that does NOT mean that you cannot learn something to improve from other systems. If you are 85% on making a shot, and another way to aim ups that even 1%, isn't that a good thing??
Also, if aiming is SO simple, why do you duck when there is a pocket available to make the ball in? Could it possibly be because aiming that particular shot is too hard for you to attempt and get a high percentage of making it?? Aiming isn't near as simple as many like to make it out to be.
I think Neil hit this directly on the head.
First, there are dozens of aiming systems just like there are many dozens of kicking and banking systems. If you can see the contact point or rail point accurately, then there is no reason for you to use a system.
There are professional level 3 cushion players who report that they don't use any systems at all, just feel through repetition. Most of them however use some sort of learned system on a good portion of their normal shots, and executing those systems over time becomes very intuitive to the point that you would almost never see them physically counting diamonds, moving their stick around, etc. I'm the same way (on a lesser level of course), I can step up to a typical 3 rail route and find the aim point within a second because I've done it so many times, no more laying my stick down, tweaking the math, etc.
CTE/Pro1, or SEE, or 90/90, or whatever, is the same thing. It's a systematic approach to finding the correct aim line. You start out very mechanically and through practice reach a point where everything is intuitive. You are still performing the steps, just very quickly and almost subconsciously. It may not work for everyone, as I think Jerry Briesath says on his DVD if there was a best aiming system then all of the pros would be using it. Instead you have feel aimers, ghost ball, contact point, back of the ball, variations of CTE, variation of fractional aiming, shaft aiming, etc. It's whatever works for you to be able to get on the correct aim line as accuarately and often as possible.
Also, Neil's other point about ducking on difficult shots is key. People keep saying "just aim at the ghost ball, contact point, etc.". Well, most of us can identify the contact point, oppostite of the true pocket opening on any normal shot. What everyone can NOT do is imagine where the cue ball has to be to hit that contact point, since we can't aim directly at it, or keep that point in sight while you are approaching and getting ready to execute the shot. Some portion of the side of the cue ball will actually make contact with the OB contact point, and that visualization, while learned over time, is never 100% accurate since you are aiming at or visualizing something that is not a specific point on the table or object ball.
Obviously we all get pretty good at this visualization, with or without systems. But on more difficult shots, people don't always duck just because they have to let the cue ball go, can't get position, etc. It's because it's tougher to "see" the spot that needs to be hit and estiamte where the cue ball needs to be to hit that spot because of the angle, distance, etc. The margin of error of the actual shot is not smaller - you still have a few degrees depending on distance to the pocket, pocket size, etc. to make the baller. What is smaller is the margin of error of visualizing the shot and the contact point / aim point relationship.
And to address barking's latest post, since I'm on a roll... Yes, CTE/Pro1, 90/90, SEE, etc. all work without the need for knowing the exact contact point. That never factors into the equation. Obviously you have to still hit that point to make the ball, you just get there a different way. For me, that's the beauty of the system, I perform the same steps on all shots, so I don't feel any more anxious over a 50 or 60 degree cut than I do on a simple 5 degree cut. I don't stand behind the object ball and visualize anything, just perform the steps. Obviously the visualization needs to be more precise the further the OB is and the thinner the hit, but the same steps occur.
Obviously I don't make every shot, nor does anyone else with or without the system. You still have to visualize things correctly and execute properly. For me, I just feel like I pocket balls 10% better, if not more on certain types of shots, using the system, so for me it works. If someone pocket balls better by using ghost ball, or fractions, or reflections, etc., then that's the system or approach they should use.
Scott