By David Warren, The Catholic Thing - According to the Pew Research Center, and several other samplers of public opinion, the extended decline of Christian belief, and especially of the “traditionalist” kind, has come to a stop... These are polls, and they display what people think on a question, at the moment when asked. There is not, and cannot be, any predictive value in this; and I don’t think even the present can be predicted by polling, or the past. Only shallow impressions may be had... But the impressions are themselves significant for public attitudes.