All "visuals" can be seen. To be "objective" they have to be describable in a way that we can recognize them when we see them. The only way I've ever heard of to learn to recognize CTE's visuals is to practice (using the CTE and aimlines as guides), and eventually "you'll know it when you see it" for each cut angle. "You'll know it when you see it" is called feel.
pj
chgo
That is your 2d rule.......like it or not....it does not apply to the visuals in pool at a table.
All in the world that you can cling to is your 2d....draw on paper stuff. It has no application at the table.
Stan Shuffett