Niels is great. But it's funny when he says he doesn't "believe" in aiming systems, or that all aiming systems are "overrated".
He describes how he only uses ghostball, and how the rest is just "feel and do". In other words, practice and experience with ghostball aiming has helped him develop the ability to just see the shots, to just feel and do. It's the old HAMB mentality, where the end result relies on many hours of trial and error, aka rote learning, and that is actually the end result of any aiming method or system.
It doesn't matter if you're using ghostball, contact points, fractional overlaps, or CTE pro1. The more time you spend doing it, the more you begin to just see the shots, to just "feel and do", as Niels says.
What he doesn't realize is that his mind has pieced together more than just ghostball locations. Ghostballs are invisible, imaginary. What the eyes are looking at is the ob. The mind estimates ghostball location based on what the eyes can actually see.
Ghostball users believe they are aiming at an imaginary ghostball location, but what they're really doing is aiming a certain distance away from center ob, based on the width of the ob and their best guess or estimation at where the imaginary ghostball should be. And all the while the mind is referencing the width of the ob, estimating (bases on this solid visual reference) the cb/ob overlap needed to pocket the ball.
Poolology takes advantage of this concept by ignorning invisible ghostball locations, and instead directs the player to focus directly on the overlap needed to pocket the ball. Afterall, that's really what's happening in the mind, indirectly, when players believe they are looking at ghostballs.