I have posted a number of times on what I take to be the nature of the development of doctrine within Catholic Christianity; I would link to the many posts here but there are too many of them--interested readers can use the blog search box to find them by using search terms such as "development".
Now some fellow Catholic bloggers (Michael Liccione, Jonathan Prejean, Elliot Bougis, and Apollonio Latar among others) and I have decided to have something of a blogging party over at Philosophia Perennis on the subject, and I posted something there on the topic a week or so ago. Now Dr. Michael Liccione has posted a major contribution to the topic, and I must say that it seems very impressive indeed. I have only skimmed it quickly tonight, and I intend to read it very carefully over the next few days, but my initial reaction is that he has, as usual, done a remarkably good job of putting his own point and responding to the points put by others.
The essay is rather long, but well worth reading. Indeed, it demonstrates rather nicely that a lengthy essay can nevertheless be a joy to read when it provokes thought in an intelligent way. The topic is probably such that shorter essays will not really do justice to the issue.