A man comes up along side of you, and reads the sign just as you have. With a roll of his eyes and a sigh, he says to you, "Watch this", and opens the door.
On the other side, only inky blackness, stretching on to eternity.
The man states that is merely because the light is turned off, and there are no windows.
He motions to step inside...
Im a little cofused here, you said that /\ in the first post. But if the man can do that then the warning is obviously a lie, or else he wouldnt be there to motion you to come in. If it were true you would simply be staring at the sign like you were before the man arrived and walked in only to vanish.