@Sulla and jmorgan74,
First of all, I don't know why you assume we've reached our conclusion on the basis of "one book" and have never considered the other side (and because of this we are "dumb").
As JWs we heard the "other side" ad nauseum. I can't speak for others, but in my case I was raised a Catholic and spent countless hours in religious classes learning all about the Bible from that perspective. How many different believers' perspectives does one have to endure before you'll say that their conclusion was not based on limited input? Okay, I also read Protestant works. Does that help? How about reading the Bible itself twice, cover-to-cover?
Yes, there are "smarter" people than me. Yes some of them say that not all of the Bible is garbage (in fact I say that myself. For instance, when the anonymous writer puts the following words in Jesus' mouth: "Why do you not decide for yourselves what is right?")
There are other "smarter" people than me who say that the Bible is more garbage than it is useful. So "smartness" really has no relevance here.
It isn't who is smart and who is dumb. It is: who can see past the horizon of their own culture and examine their beliefs objectively to determine if they are as true as they claim to be.