What's this theory about?

What I've done is to copy the pic several times and then strip each copy down to various portions of the pic and adjust each one in seperate and different ways. I used 7 different layers for the aircraft, 5 for the clouds and 10 for the ground. And then I used the visibility sliders to fade or enhance each layer to get desired blends and effects.
Normally I would just do all of my editing on the same layer and adjust the entire shot globally, but this new method allowed me to just tweak certain parts of the shot without messing up something else in the shot that I already liked in it's current state.
