Of course, hindsight is 20/20, and as I've said, I mean no disrespect and certainly am not second-guessing. I thought that the general discussion offered the opportunity to explore some of the concepts I am more comfortable with than I am with martial arts. I fully accept that every situation is unique and must be evaluated and responded to in the way that the person involved feels is best, and that they are most comfortable with. In any case, the situation was resolved without violence and that's always a win, it's hard to complain about that!
Let me throw a couple of thoughts out there, make of them what you will. Nothing to do with the original post - just using it as a jumping-off point.
In the West, our basic training is based upon our experiences growing up. Most of us begin to socialize and interact with non-family members when we begin to attend school. For boys especially, pecking orders are established early and enforced with vigor, and in many ways, they are not very different from herd or pack mentality in animals. For such a situation, 'self-defense' and 'defending one's place in the tribe' are the same thing. A challenge to one's place in the pecking order is a real threat to safety, and it must be dealt with, by violence if necessary.
As we mature, we leave most of the trappings of childhood behind, and we don't generally have 'pecking orders' in our daily lives and interactions. But many of us retain the training we received - we perceive challenges, insults, and the like as threats to our safety and we sometimes respond to them as such. So when we are challenged, we bristle, we puff up, we step up, we 'man up'. Martial arts training teaches us to avoid fighting if we can but to be prepared to defend ourselves if we cannot - does it teach us to avoid putting ourselves in situations where we might have to defend ourselves?
From a purely self-defense point of view, I would suppose the best way to avoid a punch is to not have one thrown at all. Any confrontation can escalate, but a non-confrontation cannot. One may not be given the opportunity to retreat or de-escalate a situation, and that is regrettable but it is what self-defense is about if it comes to that.
Speaking only for myself, if I can end a confrontation before it begins by saying "I'm sorry, you're right, my bad, excuse me, gomen nasai," etc, and then stepping out of the way of a bully, a thug, or a guy having a very bad day - I will. It is humiliating, it is bowing and scraping, it ain't manly, but if it stops the fist from being thrown, it is the best block I know. So it is usually my first response. Others may cast aspersions on the size of my man-janglies based on that, but I'll still have them intact, and that's kind of important to me.