Mickiana said:
The Tree of Life will not be convincing. Only fundamentalists believe that the tree was anything real. The Adam and Eve story is metaphor and the tree is only symbolic of something deeper. It was made up to tell a certain story to pass on a certain lesson.
The parables are the only parts of the Bible that mainstream members of Christianity consider metaphorical. The Genesis narrative is a history, and almost every Jew, Muslim, and Christian believes that it is literal. Only those few with loose interpretations believe that it is metaphorical. So, almost every Jew, Muslim, and Christian is a fundamentalist? No, that's obviously not true, as fundamentalism is by definition an extremist that is stricter in beliefs than the majority of his/her religion. So, no, the tree is mainly interpreted as literal, regardless of its unlikelyhood.
Sorry, but being that you aren't a follower of any of these religions, you should not comment in such areas. Your beliefs do not make others fundamentalists.
Mickiana said:
...it doesn't sound exciting enough in terms of a B grade adventure movie. The object will have to be mystical as well as man-made for a perceived value to occur and it will have to be something we have heard of or at least can understand in terms of stretched credibility.
Back on topic, I agree here. There is no artifact (and thus no McGuffin) and the entire situation is contrary to Indy's other stories.