We were nostalgic for the time when the pointillist paintings had looked like autumnal birch trees, rather than for the time when the autumnal birch trees had looked like pointillist paintings. We were nostalgic for the certainty that the bird we heard singing sweetly in the suburban forest was a recording, rather than being certain that what we thought was a recording was actually a bird. We were nostalgic for the care that had gone into the realism of the polyester lilies we had placed our foolish noses in, spoiling for perfume.