i had a friend that lost his F3B glider while he programmed the plane wrong on the ground...(too much switches on the radio...)

myself i hate programming and i have the minimal switches on my radio, so i set my radio in my personal mode..
and everybody programm his radio in his own method (user defined mixers, or self made mixers...)

I cannot imagine how somebody can, while i'm flying, adjust my radio, or viceversa...
the only stuff that is adjustable are the trims, if you while flying is too much dangerous to take away the fingers of the stiks...
but programming...[:'(]