Ghastly gestures
Diagrams are in a degree the accomplices of poetic metaphor. But they are a little less impertinent—it is always possible to seek solace in the mundane plotting of their thick lines—and more faithful: they can prolong themselves into an operation which keeps them from becoming worn out. Like the metaphor, they leap out in order to create spaces and reduce gaps: they blossom with dotted lines in order to engulf images that were previously figured in thick lines. But unlike the metaphor the diagram is not exhausted: if it immobilizes a gesture in order to set down an operation, it does so by sketching a gesture that then cuts out another." (10)
Notice the ghostly body within the diagram itself!