A hammer is considerably more than a specific means to a specific end. As Paul McCartney points out, hammers aren't just good for hitting nails. Maxwell Edison, that violent character from the Abbey Road album, uses a hammer to murder a girl he asked out to the pictures, a teacher who gave him detention, and a judge who found him guilty of murder. Urinals aren't just good for pissing in. Marcel Duchamp put one in a gallery, and revolutionised modern art. Books aren't just good for reading with. Sometimes they stop doors, or kill flies, or provide unlikely decor in a J D Wetherspoons, or get ripped up and thrown into a fire, for warmth, for a political point, etc. etc. Nothing exists for one purpose only . Everything contains the possibility of many different relations. We need a way of thinking that accounts for this: something I will call 'democratic ontology'. The song 'Maxwell's Silver Hammer' is, in one sense, a trivial McCartney number. A joke song...