It is also worth pointing out that everyone's perceptions will be different.
Not only because they process the visuals differently but also because they're looking at the balls and table from different physical perspectives. IOWs you're not going to see what I see nor what someone else sees.
Lou Figueroa
So IOW, ALL aiming systems are invalid according to you whether it's contact points, fractions, etc. One person's contact point won't be the same contact point another person needs to see and align. Another person's fraction won't be the same fraction their friend needs to see and align.
Maybe the key is to see what the aiming system teaches you to see and TRAIN the eyes and brain to see and do it. But if that's what you firmly believe...GFY. (good for you)