Good question.So stated a martial arts school in am email to me recently. Their premise is that if its not close quarters you have the time and space to run away, its only justifiable self defense if your engaged in close quarters (They didn't use the word "justifiable", but I think I'm communicating the essence of a fairly long email)
This makes sense to me. If somebody attacks you and than moves back, out of close quarters range, you really should be able to flee the scene. Certainly from the perspective of criminal and civil laws disengaging and retreating or fleeing or exiting the attacker with haste is very desireable. What do you think, is it not self defense if it isn't close quarters? Does it in fact become a fight rather than self defense if your engaging somebody who is outside of close quarters range? All opinions appreciated.
Kind of depends on how you are defining close quarters and how you define self defense. Justifiable is also open to interpretation. There is also the whole scenario of defense of another (friends, family, victim of beating in progress) which has its own set of issues.
In a court of law, the prosecution and the defense will do their best to either prove or disprove self defense, and it is not always the most factual side that wins, not to mention that laws vary enough from state to state that making a blanket statement is risky.
I will agree that seeking avenues of escape should be a first priority, and not for legal reasons. Chances are that an assailant has an advantage over you if he or she is pressing an attack. They probably wouldn't be doing so otherwise, so escape is generally your best option.
The nature of that advantage can be anything from a physical advantage (larger, stronger, faster, etc.), a damage multiplier (i.e. a weapon), a range advantage (projectile weapon, most likely a firearm, though I suppose a crossbow bandit is not out of the question), a surprise advantage (the attacker was laying in wait), a terrain advantage, or strength in numbers (i.e. friends). Or several at once (i.e. larger, stronger guys with guns and knives).
Given the variety of situations that one can find themselves in, I think the school's letter is a bit inaccurate, but without actually having seen the statement in context, I won't draw any conclusions.
Personally, I feel that the defense of one's self goes far beyond the physical altercation and begins with one's own habits and behavioral patterns. Often, those who seek to do us harm take advantage or have access to us as a result of our habits and behavioral patterns in order to do so.
There is no alertness/prevention skill or skill set that will guarantee that a violent encounter will not befall us. But we can minimize the chances of a violent encounter before hand by exercising a modicum of common sense.
I did not read this thread in its entirety, so it is possible that parts of my post have already been addressed.
Daniel