摘要：Several years ago my eldest daughter was reading and re-reading and re-re-reading Sophie’s Choice. When I asked her what was so engaging about this book she said to me, ‘Have you seen/watched Eternal Sunshine of the Spotless Mind?’ I hadn’t and said so. Some years after this conversation, I was crossing the Atlantic and took the opportunity to watch this strange, moving film: it has been one of the more profound filmic texts I have experienced and one which comes to mind as I read and reread the statements/texts below. These began with the provocative, albeit witty and charming, first statement by Robert Lumsden. It occurred to me that it might not be a bad idea to invite a few colleagues in the domain to respond to Lumsden's implicit challenge. I am reminded of Keats’ utterance: ‘Heard melodies are sweet/But those unheard are sweeter.’ How? In what specific sense? Why?
