He had some interesting patterns of thought and communication...his shortcoming was not spending enough time at the pool table. Some things that "look good on paper" won't stand up under real pressure in a real situation. He couldn't get past the fact that aiming at the center of the pocket was not as good as aiming at one side or the other. And it is a complex subject, we never really got into the "meat" of the matter.
The one thing that he didn't "real eyes" is "aiming" at the center isn't done logically. It's done by connecting several factors like speed, relative starting angle, cue ball targeting, and the fact that there's three targets that must align.
The Cue Ball is the primary target, the object ball is the secondary target and the pocket reflect the connection between the two to form the ultimate target. This is something that must be connected, not by our eyes, for we can't see all three at once, but by our feel which is accessed in our unconscious, and is very complex.
This is why a Pro will say they have a great "feel for the pocket", instead of a great "sight for the pocket". 'The Game is the Teacher'
It's a real pity that he isn't here to respond to that. I expect he'd have a few challenging and thought-provoking things to say in relation to the above.