[felipeko]

Exactly.

It is understandable that having an model of an observer can be useful to a brain.

But how/why does that opens a window to an actual observer, and not just a model, is the question.

And we only know that - an actual observer exists - through first hand experience. It is our most immediate and certain knowledge (Cogito, ergo sum), everything else can be questioned. Yet, there's nothing in physics or computer science that gives a hint to this being the case.

[jlokier]

Ok, so first hand experience tells you an observer exists.

Are you sure that observer has your personality, mind and memories? Are you sure that observer is involved in any way with the world, other than observing it?

Or are those other things just part of the machinery, and quite illusory. For example our perception of time, coherent thought and personality aren't all that consistent, as we know from various experiments and observations.

Here is the crux of my point:

If there's an actual observer, let's call it "primal consciousness", but they are observing the world through the lens of a mind, which is a complex, self-referential, reactive process running on a brain and body, we don't need to say that any particular physical process "creates" consciousness. We can settle with physical processes create something complex and interesting, which runs models of itself and the world, which "primal consciousness" observes. The "mind machine" running on the physics does not contain the observer, it's observed by the observer.

That doesn't "solve" the hard problem, but it's a model with different properties and consequences than some of the other models.