When I started using Hal's system to aim and now CTE my position play is hugely better because I am lined up right to make the shot and thus I can see where the cueball is going.
IF you can see where the cueball is going, that means you know where the tangent line is and you are imagining the collision.
Which is ghost ball method.
You can't image the cueball path after collision by looking at your shaft or pivot or bridge.
Only by imagining the collision can you tell where the cb is going.
And as Efren would call it , PATAMA.
ONce you are lined up on the shot you can SEE where the balls are going to collide.
If the line you end up on is exactly the same as where the ghost ball would be (if it were a real ball) then that does NOT mean you used Ghost Ball Imagination to get to that line.
Anyway, I know where you stand on this and it's fine. I think my experiment shows adequately that it's difficult to place an imaginary ball precisely.