I've only had one (very brief) LD and I just got curious. Lets say that I was in a room with two dream characters and I took out a gun and shot one of them. Would the other react accordingly (A.K.A freak the hell out) or just stand there and go "oh you shot that guy, huh?". I'd just come to imagine they are like NPC's in a video game. Like in Grand Theft Auto you just walk around with a rocket launcher and nobody pays you mind, and talking to them would be like that hologram from I, Robot where if you say something it wasn't programmed to respond to it just gets confused. I'm probably horribly wrong but I'm curious to see.