Ok, so I feel I should start off saying, no I have never had a lucid dream, though I have somewhat recently had a false awakening(scared the hell outta me! ) any ways, onto my theory I would love to test myself, but am unable at the time to do so, I wonder if you can't in a lucid dream, forcefully, or even passively for those who prefer that(probably a better idea to do it passively) enter into a control room of your mind par say seeing as how dreams are in your mind, and switch on parts of your brain that are otherwise shut off in the waking and sleeping state. This is a very complex theory I know, because it is believed certain parts of your mind are shut off in order to keep you dreaming, so theoretically saying my theory worked, theoretically in that(lol sorry if that is confusing), you could end up waking yourself up if you turn on the wrong parts. But if you could make sense of the control room, and switches and such(or buttons, I'm sure every ones control room would look different) and turn on parts that are always off, you could, in theory mind you, increase the usage of your brain to 100% rather than the mere, what is it 12% of our brain we use? Imagine the possibilities, and how mind blowing it would feel, to awaken your ever sleeping mind parts. I realize there are many theories on what dreams are, but truly no one knows, if you could accomplish this, and successfully open your mind, the entire dream scape would be for ever changed.