Ok Mike, I have a better idea of what you're on about now. Are you thinking that instead of the nice smooth continuous monotonic curve with no flat sections, the inexperienced colourist would come with a curve looking somewhat like a camel's back?
Graeme
Can, and does. ;-(..
And also puts the points at the wrong place and at the wrong level, even when using a rather smooth curve. Hence the harsh faces, buried detail, and other visually unpleasant results.