by DaddyBelief and emotion drives thought, thought drives action, actions define reality. Truth is subjectively based upon what we choose to believe. Therefor it is ultimately of little consequence. So to answer your question... What do you believe the answer is? How do you feel about it?
Oh Daddy. Your logic is so big and hard!
You've got three mighty assumptions there and then the attempt to somehow link truth and reality. If we take your assumptions as true, the only thing we can conclude is that reality is subjectively based on what we choose to believe.
Truth, on the other hand, is not based in belief. Truth informs belief, misinformation and disinformation may manipulate belief, and this will ultimately impact actions and decisions, and reality. Each individual's experience of reality might be different, but truth is not subjective. A person who believes untrue information, or who extrapolates incorrectly based on mis/disinformation is stupid. Now go on and give yourself a little mental masturbation; semantics is all in your head, remember.
Breakthrough: no discussion necessary. Beautiful, succinct, and...dare I say...true.