I forgot to say that there are lots of theories about which wing should stall first so that you need to adjust the angles to fit. In the big people carrying, so it's important, airplanes it is important to keep us alive and make up for a few human mistakes. Setting the angles to soften/prevent a stall is definitely important.

In the model world where it isn't life and death and the wing loadings are low and power is unlimited (mostly) then the stall characteristics of an airplane are not so critical and neither are the angular settings except for what I said before. It sure keeps life less interesting.