Good news - having read Oliver Sacks's 'The Mind's Eye' I have now diagnosed myself as suffering from mild congenital prosopagnosia. All these years my wife has been telling me I just can't recognise faces very well. The only serious problem it causes me is when negligent TV directors cast two women with the same hairstyle in the same drama. Now I know how the dyslexia victim feels when they have been newly defined as not stupid. I am vindicated, but no better off really. Will continue to read the book in case I have something else as well.