A question, just to make sure we're not totally talking past each other: What is the kind of evidence that would lead you to update in the direction of dualism being true?
Scientists cutting into a living brain and finding the interface points, brains doing physically impossible computational feats, physical systems behaving differently in the presence of brains. Hard to say more than that in the absence of specific predictions.
In Zombies! Zombies? Eliezer mentions that one aspect of consciousness is that it can causally affect the real world, e.g. cause you to say "I feel conscious right now", or result in me typing out these words.
Even if a generally accepted mechanism of consciousness has not been found yet are there any tentative explanations for this "can change world" property? Googling around I was unable to find anything (although Zombies are certainly popular).
I had an idea of how this might work, but just wanted to see if it was worth the effort of writing.