What makes out great art? You can see and feel the difference. Somehow something is lacking in some art that keeps it from being great. We’re talking about this little thing extra, an excess of some sort. I asked friends to give it a name: Art lover Shuai Wang told me you could call that extra element "poetry." Artist Wolfgang Müller said it’s about looking at things with a certain “Schwingung” (oscillation). I’m reminded of what Roland Barthes said about the gesture. What is a gesture? he asked: Something like the additional to an action.