I agree with this point floyd. In fact this is why the xmrv research from mikovits was so exciting, because it integrated several diverse observations. The unexplained rise in certain cancers in recent decades COULD be caused by a retrovirus, especially if that retrovirus looks capable of provoking the cancers in question. This argument appears to have nothing to do with ME. That is why it is so interesting. It makes you look at the world in a new way and ask new questions. It draws together diseases that on the surface, appear to have no connection. it crosses boundaries and categories. This is the mark of a good researcher and a real thinker.