It would be logical to say yes because you do see the glass as half empty or half full, and you don't see it as anything else.
The proper question to as is "Which option do you see this glass as, half empty or half full? Please use a number two pencil only and make your mark heavy and dark."
But I do not see the glass as anything, but as a matter of fact I see the glass as nothing because of the fact that you can never tell reality from your subconscience, but in a world that states what you see is the truth, you can never determine what truly exists and what is false because your mind can alter reality into making you believe that something is existant. So there for, The glass is nonexistant.