They're not conflicting beliefs. The Bible introduced the origin of man, the Bible was written by men. The conflicting belief you speak of, must have to do with the Bible's assertion that God created man out of dust, some 6200 years ago.
Are you saying I'm ''betraying God,'' by believing in the theory of evolution?

Your analogy doesn't make sense, because a theist who believes in evolution, isn't 'betraying' God. The Bible isn't God.
It's not just you, there are others I'm sure, who have the same assumptions about theists.
wegs, I do not know where the - ''betraying God,'' - came from. I only said conflicting or opposing.
I believe my analogy is sound - one cannot "completely and truly believe" in any two "conflicting or opposing" beliefs of anything!
Is it possible to "completely and truly believe" that the circle is "round" - and at the same time "completely and truly believe" that the circle is "square"?
wegs, I am not completely stupid(only partially) - I do know the true and complete definitions of Theist, Atheist, Theology, Atheism, Theism, Creation, Evolution, Belief and even Delusion.
I also know full well that all theologies and gods were indeed created by man - and not vice-versa!
wegs, that is why, I dmoe, also know that any individual cannot - "completely and truly" believe in - any two "conflicting or opposing" beliefs of anything...without a delusion of some kind being involved.
wegs, any individual may be able to say that they give "conflicting or opposing" views equal credence.
However, fully, completely and truly believing in either one of two "conflicting or opposing" views is nigh' near impossible.
Also, wegs, do I constantly have to remind everyone that I, dmoe, DO NOT assume or presume anything!
That is WHY I, dmoe, Post questions asking for clarification or further information - because I DO NOT allow my myself to presume or assume. That is part of my ingrained grace and discipline - I have no option in that respect!