I got a catlog with the new Metolius "Range Finder" cam featured on the back cover. "Red means stop, Yellow mean caution, and Grean means go"
So, since you can't use the red part of the cam, why have it there in the first place? But if you cut it off, the consistent shape of the logrithmic spiral forces you to re-apply the Red/Yellow/Green color code on what's left. Get rid of the red, reevaluate, cut off more red, etc, until you're left with nothing.
So, essentially, there is no portion of the cam that can be considered "green" permanently, which makes the entire cam worthless as functional pro.
"Range Finder" is a dumb idea...