My stance is this:
I am fallible in my interpretations of BOTH the biblical text AND natural revelation. When there is a conflict I cannot give one automatic preference over the other. I must weigh the evidence first and see which of my positions is in error. I know the sources from which I draw my interpretations are infallible (because God's biblical revelation is consistent with his natural revelation) but I cannot claim that EITHER of my interpretations are.
Was not natural revelation influenced by the Fall, (i.e.Noetic effect of the Fall)? Is there not the truth of the Holy Spirit for Special Revelation, etc.?