Okay, what kind of being're you, then? No, I don't. Where there're people, they create an impression, and I can enter that impression so I can see what they're seeing and they can see me. But that's different from actually being in the waking world.

Of course, there's always taking over a Dreamer and making them do things like they're in a dream, but not everyone's easy to do that for. It's easier if they're already sleepy, weak-minded, or otherwise vulnerable. Or asleep.