I didn't actually; selective reading on your part, yet again. An example of my point, would be that I can take a set of balls, an object ball and cue ball, at a random location on a pool table, that would be be a perfect 1/2 ball hit in fractional aiming, and by adding a third variable, such as moving the eyes relative to that 30 degree shot line, focus on center cue ball from that new visual and address center cue ball, then stroking down that visual would either thicken or thin the apparent 30 degree cut, depending on where the vision is now relative to, but not on, the original 30 degree shot line.