Yeah, actually by not putting ones self in a bad area will give you more chances of living. Whenever I carry I always find myself avoiding certain areas, stores and am more polite, errrr i guess professional which is extended from when I wore a uniform.

The knife issue well, I guess if they are going to get ya they are gonna do it if they are determined and have planned it. It's up to you to fight like hell to stay alive using any means possible. I have seen some bad stabbings in my life and they ain't very pretty. Most were in the wrong place or caught it unexpectantly with another helping the attacker. On the streets it is more likely a one on one like a robbery or carjacking or rape. Run for distance remove your firearm and blast some holes in him.