Coming out of that thread, I want to make sure I can realistically model flare so I can truly call where my spot meter readings fall on the negative. I don't care if it takes a long time planning, discussing, and hammering out the details. I want the results that I can apply in the field. That's why I use the Zone System terminology for camera and meter, but sensitometry in the darkroom.

I only have an instant to take the photograph, but all the time in the world to finish it in the darkroom.