Yeah, I agree with these other guys. A lot of people are incapable of reconsidering their beliefs even when science or reason exposes them as deficient.
It has been my experience that many religious adherents will cling to their "faith" even in the face of powerful evidence to the contrary. Furthermore, there are even those who wear their "faith" as a badge of honor, believing that it makes them a stronger practitioner of their particular religion when they dismiss or even denounce science for its challenge to their subscribed truth.
As to the vagueness of the Bible, that is one of most compelling pieces of evidence as to why I find it incapable of being the infallible word of God. It often lacks the clarity and inarguable soundness that I would expect, or at least HOPE, God would employ in His attempts to communicate truth to mankind. Why not communicate with man in a medium as undefilable and inarguable as mathmatics? When I take two objects and combine them with two other objects, regardless of my natural language or place of origin or the current conditions surrounding me, I will most certainly arrive at the conclusion that I have compiled a group of four objects.
2+2=4. In this simple mathmatic equation, I have expressed four distinctly recognizable concepts. I have expressed the concept of "two"; I have expressed the concept of addition, of combining something with something else; and I have expressed the concept of equality, as well as the concept of "four".
To me, this seem much less vague and inarguable as certain Biblical concepts, even simple ones such as John 3:16. "For God so loved the world that He gave His only begotten son, that whomsoever should believe in him shall have everlasting life . . . " In this passage, the concept of God is arguable and undefined; so too is the concept of "belief" and "everlasting life". Do I need to believe that God has a son? Does this mean that I must believe that Jesus was real? Or do I have to believe that Jesus was the son of God? Or do I need to believe that Jesus was the sacrificial atonement required to save me from sin? And what exactly is meant by "everlasting life"? Will I live forever physically or will my self-awareness continue forever?
Anyway, I hope everyone can see that the cryptic and highly interpretable nature of the Bible leaves open much to still be determined. And this is supposedly one of the easier and more clear passages to wrap our limited understanding around.