I think that it could work, but i'm going to wait to experiment with unknowns until i have my first real lucid dream . Another thought occured to me though, as a reality check it probably isn't good enough to ask: "is my gf here? it must then be a dream" because there is an indefatigable amount of reasons she would not be even in reality. A better idea might be to ask something along the lines of: "If she's not here, could this be a dream?" as a reality check, though it still seems unreliable

Maybe if someone always wore, say, a watch, could that be used instead? my watch isnt' here, could i be dreaming? I ask that someone more experienced than I please try this out and tell me how it goes. I'll try the idea myself, but my results can't be taken as fact...yet . Thanks for the feedback guys.[/i]