Not to throw gasoline on the fire, but...... I do have a personal experience with the aiming system in question on this thread.
Keep in mind that I am totally neutral on my position of CTE.
I took an instructional class taught by one of the very instructors that has been mentioned in a few of the posts on this thread. I will NOT mention a name. On the last day of class, the majority of the lesson was on aiming by using a system. It wasn't referred to as CTE, but Hal Houle's name was mentioned at some point during the lesson. Anyway, in the act of trying to show the students the six different places on the object ball (one being a full-ball hit and another two being a thin cut shot and an extremely thin cut shot, basically leaving three spots on the object ball to make the rest of all shots, once the angle of the shot is discerned. So, in the process of showing the class how the system works, this instructor was MISSING more balls than he made. Shots that I was thinking to myself "Hell, I could make that shot a high percentage of the time". He didn't stay on the table long as he (IMO) seemed to be frustrated at his inability to give a convincing demonstration of a system that we had payed big bucks to have taught to us. He turned it over to the class to work on the system. Of the eight or so students in the class, I never heard one positive comment on the system. I myself didn't like it. I figured I might calculate the angle wrong, therefore mistaking which "number" shot to take. So, it all boiled down to making some kind of JUDGEMENT. I quickly surmised that I would just stick to what my brain has learned over the 35+ years (at the time) of pocketing balls and just trust my instincts. Whatever aiming "system" my brain learned on its own over the years works great for pocketing balls. If I can keep the wobble in my stroke down to a minimum, I am a decent shotmaker. All in all, I think a smooth, straight, repeatable stroke is far and away more important a shotmaking tool than any aiming system out there.
These things being said, I still believe that any aiming system out there CAN and DOES help certain players. They aren't for everybody, but do have a place in the pool world. Obviously it wasn't for me, but you can't overlook the fact that there are people on this forum that swear that it has improved their game. It's hard to argue with that, regardless if they cannot tell you HOW it works.
Maniac
I don't know what instructor you had, and don't really care. However, I would like to point out something to you. And, point it out to all the instructors too. I know I have caught myself doing it in the past.
Sometimes, when showing a student HOW to do something, like line up for a shot, we will go ahead and shoot it. OUR focus is on doing the technique right to show you, not on pocketing the ball. So, many times, the ball will not be pocketed. We are not concerned with the fine tuning parts that you can't see, just with the parts that you can see, so you get an idea of what we are talking about.
Now, I agree, to many that may very well look like the 'system ' doesn't work. And, as instructors, we should go ahead and do the 'fine tuning' and make the ball, to prove the point. That would avoid students thinking that it doesn't work.
Just so others on here know, CTE and it's variations DO work. I have taught a variation of it for a while now. I have had new students pick a shot that was very difficult for them to make. One tried it 6 times in a row and never made it. I then described what I wanted him to do, and had him get in the right place to make the shot. I then blocked his vision of the ob, had him bend down and do as I described and just shoot. He made the ball on the first try.
So, I don't care if this stuff works on paper or not, I'm not at the table with notes or calculators or anything else but my cue stick. If it works, it works, period. I don't know how a lot of things work, or why, but I still use them every single day. (Such as this computer. I have a general idea, but I'm not about to diagram how one works!)