We convince by our presence.

After I signed onto Palace, I made my way down the hallway toward the study. As soon as I entered the room, I stopped dead in my tracks. What was going on here? I was standing in the middle of total blackness. Where were the comfy chairs, the chessboard, the bookshelves, the glowing fireplace? All I could see was my avatar owl standing in the middle of a featureless void. Was the Palace software suffering from some kind of glitch? Or was there maybe something wrong with my browser? I stepped back into the hallway. Reality popped back into existence. Everything looked normal there: the carpeted floor, the pictures on the wall. So I stepped back into the study. Sure enough, nothingness enveloped me once again. It was quite disorienting, as if I did not exist anywhere in particular. Then I noticed that the space was not a total vacuum. Along the perimeter of the emptiness I could see slivers of the room. Now I finally understood what was going on. Some mischievous person had painted black all over the walls, floor, and ceiling, while missing a few spots along the edges. “Clean” I said, invocating the command that wiped away anything users added to a room. Sure enough, the study reassuringly popped back into existence around me. Once more, it existed and I within it.