Some people will never figure out AIMING, because their DIFFERENT.
Very good point!!!
You see it as flawed, I see it as perfect. Tomato tomato.This is the best answer so far. The system presented is clearly geometrically inaccurate, which has been shown multiple times. Yet, I don't think anyone has reasons to doubt that it works for Mensabum, so then the question becomes why it works for him if it's geometrically inaccurate. And the answer, just like BC21 said it, is that they aren't lining up the points so much as they are assuming they're lining up the points.
"Close enough" aiming systems (e.g. CB center -> OB contact point or the one presented by Mensabum) even if wrong on paper, can work well if the player learns the required adjustments over time. The deceiving part is that the player might not realize that this experience-based subconscious correction is taking place, and therefore assume that the system works perfectly without correcting for the flaws. Then they might go share that system with others, and are baffled when the majority calls them out for the system being wrong. This is what has happened here, it clearly works for Mensabum and no one has reasons to doubt that, but there is no reason to discuss further if the system works in general, as it clearly doesn't. It's a "close enough" system, as is evident to anyone by analyzing the illustrations.
If someone is looking for a new aiming system to try, there is no reason to start with a flawed one. Parallel lines (https://drdavepoolinfo.com/faq/aiming/contact-point/) is almost the exact same thing as the one presented by Mensabum, except that it's geometrically accurate. Of course you still need the experience-based adjustments no matter the system (these aiming systems are just baselines, not accounting for throw/swerve/squirt etc.), so you can get away with almost any system in the long run once you learn the adjustments (including Mensabums), but there is just absolutely no reason to select it, when there exists a very similar one that isn't flawed and is already well known.
If Mensabum has played with it for a long time and it's second nature to him + gives good results, there is no reason for him to change it. Yet, that is not a reason for others to use it, given the reasons stated above. I can't think of a single reason why this flawed one would produce better results over the long run than the parallel lines system. Whether such systems are good in the first place is an entirely different discussion, but if one finds them useful, definitely use the geometrically accurate ones.
I had a student once who wanted me to promise that he'd play a ball better after a brief lesson. At the time I did not know the three words to whisper in his ear to make him a champion, and told him so. He still took the lesson. He liked to play $100 sets. I don't know whether he actually got better, but I like to think I gave him the tools to improve.There is no magic pill.