there seems to be this double standard going on regarding when it's fine to kill. when it fits your agenda apparently. i think in a way lucas has written himself in a corner with having to make the order flawed in the PT, this way they appear like they are complete morons at times and have forgotten what their original idea was about. there is no such thing as completely defensive martial arts, not to my mind. like anything martial arts also depend on an opponent and cannot be practised without opponent. there is also the small issue of self-preservation which keeps us alive during fights, it also keeps jedi alive. if all they did was run into combat with arms wide open, there'd be only a small group of them left, hidden in a cage somewhere, shivering becuase they couldn't make fire by themselves for fear of igniting their sabers... anyway, we exist between self-preservation and sacrifice, it seems, there is no absolute state to this, however much the jedi apologists and the jedi order would like it.