I don't really see a problem in the issue, however.  The Theory of Evolution, for example, is not the intractable problem that Protestants (and some Catholics) seem to make it or that some proponents of evolution would use as some vague proof for their atheism.
One of the memes I see, regularly, here goes something like "Oooh!  Oooh! Evolution means there is no Original Sin since Adam and Eve are myth."  Whether evolution is fact doesn't negate the Dogma of Original Sin; it either causes one to explore the idea further or decide that, regardless, it does not matter to his faith.
I don't agree that we have "ongoing revelation", in the theological sense.  I do believe that Divine Revelation (to the world) ended with the death of the last Apostle.  That said, I have no issue with reaching a better understanding how those doctrines develop - e.g. the necessity of the Church to salvation.