Lol.....What is the difference between "relationship" aiming, which you define as the visual relationship of "the CB up against the OB to make the OB go where it needs to go", and fractional aiming? Fractional aiming is exactly what you are referring to when you say "relationship".
However, as Matt (BilliardsAbout) has already mentioned, aspiring players need more guidance than "just hit the relationship between the balls". That's why my book, which you and R.D. both have a copy of, specifically states that the primary goal of Poolology is to help a player become the type of shooter that "just sees the shots." And providing solid fractional aim points allows those CB/OB relationships to be captured and stored in the brain. Eventually the player will not be thinking about object ball position values or alignment values or fractional aim points. They'll just automatically see the relationship needed to pocket the ball.
Seriously, Dennis, this is disappointing. I mean, you and Robin each have a copy of my book, every word of it. Did each of you just look at the pictures and not read any of it? :frown:
We both read your book and think it's fantastic.... for those that need the fractional aiming system. Robin has to teach it to some of his students. But... at the same time, he can show you and anybody else in 10 minutes how limiting it is. Your statement of how you've got to "hit the OB thick or thin after getting the right fraction" tells it all. Only 60% of the OB is available using fractions and the other 40% must be aimed either thick or thin with zero concrete evidence of the fractions. I think he will call you about your book. I gave him your phone number.