I noticed the two women staring at the building opposite. I heard a crow and saw the shape of one perched on a high sill. It was still, with its beak open. I stood with the women and we watched for a minute, two minutes, three minutes. The bird did not twitch. Beak open. The women agreed that it wasn't real. I agreed with them. Very realistic. I went into a shop. When I came out a few minutes later the crow was jumping around on the sill. Perhaps the things we dismiss as inauthentic are things we have not given enough time to yet.