>So the question still remains. How does one create a computerised version of absolute reality that actually reflects absolute reality


We don't have to.


We don't need a model to "actually reflect absolute reality".

We just need a model to hypothetically reflect absolute reality.


If we can imagine a how atoms and molecules could hypothetically exist in absolute reality, then we could begin to imagine how an observer could hypothetically exist in absolute reality.


If we can hypothetically create an observer, then the computer program should have data encoded abstractly in it, like in the paths of a hypothetical neural network.


That abstract encoded data has to reflect what we observe in relative reality.

If those observations don't match up, then we know there is something wrong with the hypothetical model of absolute reality.


We confirm it indirectly.