Bible and Authority

I've done a lot of thinking lately about the Bible, since I am in a class called "Biblical Foundations of Literature," and have come to reinforce a previous conclusion I made.

Protestants always make a big issue out of who wrote the Bible, when it was written, etc. in order to show its infallibility and absolute inerrency, given that it is the foundation of their faith. But to a Catholic, the who doesn't really matter (in a few cases it does, but for the most part it can play second fiddle).

Why? Because we have an authority telling us this is the Bible as we know it. The men who wrote the Bible may have written in completely differently, but they way it has come to the Church is the way God wants it. Now, I'm not suggesting that we should even consider the Bible to have undergone changes before the Church, but even if someone could conclusively prove the Bible is completely different than what it was, the Authority of the Church still tells us what we have is the Bible God wanted us to have.