I will try again to allow comments. All comments will be moderated. This means that comments will not appear immediately but will await my decision whether or not to permit them. I know that many fruitful conversations can and do happen through the comments but I also know that it had gotten out of hand and the conversations were adding only heat and no light. This does not mean that I agree with all the comments that are permitted but only that they are legitimate comments and not simply vitriol. I hope that this will work.