Dear readers, it has come to our attention that Haloscan, which has provided the comments service you have been using here, does not keep comments available for more than a few months. Much to our chagrin, some great comments threads on this blog have disappeared into the ether. So we are going to switch over to the Blogger comments system, which we hated when it first became available, but which seems much better now. This will mean a somewhat painful transition at first, and eventually all the comments on the old Haloscan pages will be lost (which they would have been, anyway). So, we are going to keep both systems for a week or two, while those old threads are still alive. However, beginning today, please start using the "New Comments" link to post your comments on new posts. Many thanks for your patience, and keep the great comments coming. We enjoy reading your thoughts.