Expectation Theory... False?

Hello,

I feel it is common knowledge on this website that dreams flow as according to our expectations as if it was a dream fact. I feel that in practice, this is untrue in many instances.

You probably know the feeling of "I know this" although no one told you and that way you "know" who the people around you are or where you are or what has happened in the past while all of it is false. Sometimes, I even believe that a person I've never seen before is for example, my father and I somehow know this. My point, is that often, I'll have "false knowledge" and will thus be sure that something is about to happen. I'll do everything that I believe has to be done in accordance to that believe but I often end up being completely wrong and nothing happens as expected. I only realize after when I wake up that I was being delusional to everyone else in the dream. My expectations fueled by the dream's intrinsic knowledge does not even come true.

Example from last night:
I am somewhere ambiguous. A woman sells recreational drugs to a man. Then, I "know" the drugs will actually kill the man. Two man come and kick the woman to the ground. I somehow find this very offensive and I and another woman that just appears insult the man. The woman says they are the "scum" of the world. At this moment, I feel that these people are our enemies and we must destroy them before they kill us. To my surprise the woman becomes sad and tells the man she was planning to play with him later that evening and she was disappointed. She sounded like a girl talking to her father. Confused, I ask her if he is her father. She says no, but that he sort of adopted her in a way.

This is not the best example, but I couldn't remember so I just went from a dream I just had. In the dream, there are twists happening every second and I can never foresee what will happen even if I am convinced I know.

My point is that I feel our "belief" that dream flow in accordance with expectations is flawed and I wonder if perhaps it would be useful to find out what is (or are) the real factors.

I don't really have an idea, but I feel like the dream has expectations of its own and I have no access to it. As if I am an independant element all together.