I think that's not a common case, either. For most men, the most common fight/attack threat is an angry man, not an experienced thug carefully choosing his fights. Angry men come in all sizes and skill levels, with a small proportion (probably smaller than the general population) being well trained and another small proportion (probably larger than the general population) having significant experience in being in fights.I am not a fan of this argument. If the guy attacking you is really that bad, then a few jumping jacks, sit ups and push ups should be good.
The guy on the street attacking you, has probably done this before. He is attacking you in a way that has worked for him in the past. It is very likely it will work again. Sure, he is completely "untrained." But, what he is doing, he learned to do in the "street." He learned how to do this by doing it to people that did not want it done to them. He has probably done this to other guys trying to do their thing to him. He might not have gone to a dojo... But every time he tried it, it was on the "street," for real, with real consequences.
I think we are the ones with the fantasies. We go into a dojo or gym, we have some instruction and we try a few times. We work with people who want us to succeed, who don't really want to hurt us and we all expect to go home safe and sound. The fantasy part is where we think that makes us ready for the "untrained" guy on the street. That guy only knows 2 moves. But see those 2 moves he knows, puts people down for real, on the streets.
We need to train harder. We need to test ourselves better. But we also need to know better who we are. I am a guy that works in an office, and trains a few hours a week, with people that don't really want to hurt me. (even if I am sparring, rolling, doing situational drills, multiple attacker, weapon work... they still want me to go home alright) KM wants you to be safe at the end of class as well.
The selection of a victim is a different dynamic, and is more about a surge attack, which will have different dynamics from a fight. This is far more common for women than the first scenario, but is probably not going to involve an experienced street fighter (different dynamic), but someone who has "done the math" and decided they have enough of an advantage to go for it.