I am in a park. There are trees and a wall to the left of the path, a vast open space to the right. The sun is beating down. I am wearing a warm jacket and carrying a bag that is slightly too heavy. Sweat is trickling into the small of my back. In front of me and on either side and – I check – behind, a herd of deer displays a languid form of Brownian motion. Two young stags trot across the path like drag queens in high heels balancing elaborate candelabras on their heads.
 
It might seem like...