Daisy comes up to the bar and rests her head on it. On one side, all is clear and differentiated; on the other, it’s blurry and you cannot tell where anything starts or finishes. It’s not a drinks bar, you see – it’s Saussure’s horizontal bar between signifier and signified. Even so, Daisy starts pushing her bowl with her paw and I recognise slowly that she is thirsty. Poor Daisy! I say. Her bowl is empty. So I pour her a drink and she laps it up. Then she takes her soggy nose down from the bar and I know I cannot follow. There are all the signs of a dog running away but already she has gone.