On our way home from the 12/31 -> 1/1 fes­tiv­i­ties last night — K dri­ving, because I’d had more than just a taste of my brother-in-law’s brandy slush — we passed a road blan­keted in soft new snow, with just one soli­tary set of tracks down its cen­tre. It struck me as the most per­fect …