-You've been here before-
"If you accidentally cut out of reality in the wrong place, you'll end up in a back room filled with nothing but putrid damp carpets, a maddening yellow monotony, the never-ending hum of fluorescent lights at full blast, and some 600 million square miles of randomly divided empty rooms. God help you if you hear something lingering nearby, because it must have heard you..."
It's just some unlucky guy who fell into the back room and used it as a wanderer's survival diary.
Intention: Survive first and worry about other things later