If one normally expects to see Condition A and it is missing or excessive, it tells one something about the refering clinicians and examining pathologists, and their need for retraining. In a few years there will be another disease. If we don't learn from the mistakes made and the true successes in dealing with BSE, we will relearn them the hard way. This must be done honestly because, as I tell my students, God is illiterate. She cannot read the literature and certainly never reads any ministerial statements.
Reality is separate from the scientific and political literature.