What if anything would cause me to say, well maybe I'm wrong? So the answer is if somebody showed me a piece of J from the 8th century BCE and there was no P with it, and I was convinced that it was from the 8th century and that this was an individual thing... and I believed that, so I'd look up and I'd say, HaKadosh Baruch Hu, why are you testing me? ... If it's a question of emunah, I am perfectly willing to be a fundamentalist... and to say that those are the parameters within which I operate. I may push the envelope as far as I can, I may choose to operate in a broader way than many others whom I know, but that's where I draw the line.A true OrthoFundie can never be challenged with facts that contradicts his beliefs. Regardless of how overwhelming the evidence is, one can always brush it aside as a test of one's faith. And this, of course, is true of any fundamentalist, regardless of religion.
*Unfortunately, I cannot find the original web source for this audio lecture. I believe that it was from YUTorah.org, but if so, it is no longer available there.