One thing that really doesn’t make a lot of sense to me are Mormons who embrace a post-modern epistimology. There are a numbers of elements of post-modernism which I think are attractive and important. But it’s view of truth is one I can not swallow and I for sure don’t think that a true believing Mormon can accept it.
In a nutshell post-modernism teaches that objective truth can not be known because of the limitations of language to express it (I’ll ignore how self-refuting that is for now). Since Truth (capital T) can’t be known all we can cling to are our own perceptions and convictions of Truth. There are some LDS who embrace this view and apply it to the individual nature of a testimony to the truthfulness of the Book of Mormon. Their reasoning is something along the lines of “My testimony is the truth that I have been given, it may not be evident to anyone but me, but it is the truth that God expects me to live by. What other people do with the truth they are given is up to them.”
The problem with this approach is that Mormonism preaches the opposite. Mormonism and Post-Modernism are incompatible. First off, Mormonism teaches that there is a modern prophet who hears directly from God and clarifies the truth to all men through him. Truth can be known through the LDS prophet. There’s no second guessing what is or is not true after the prophet has spoken. Second, the LDS church proclaims itself to be the one and only true church. You can’t declare other churches or faiths to be true at the same time as saying that you are the “one and only” place where truth can be found. The best you can offer is that other churches contain truth but are not True.
I understand the attraction of a Post-Modern approach for people who may encounter things that challenge the truthfulness of their testimony. It’s nice to escape critique or examination and say “it’s true for me.” It can also be convenient when comparing what President Hinckley teaches as compared to Brigham Young’s sermons. Polygamy (or the priesthood ban or Adam-God) was true then but is no longer true now. But it ultimately doesn’t fit with the LDS church, which claims to be True for everyone.