>maybe consciousness is a side effect, an emergent phenomena. once the brain gets complicated enough it will just arise (on a scale)
This is my feeling too. Since the brain is just physical matter arranged a certain way, doing a certain type of processing, I really think it possible that some computer programs we use today are also doing the right kind of processing to grant them a simple subjective inner experience. Of course most programs don’t have a way to tell us if that’s the case, except maybe GPT-3 :)
> are our decisions ours? or some inner layer in us creates the decision and then we just consciously observe it / let it play out
I have evidence for it being the latter: our higher brain functions let us rationalize, to ourselves, the decisions that were deterministically made by our subconscious, so it feels like “you” made the decisions “because you wanted to”. People who have the connection between their brain hemispheres severed can unconsciously reach a decision in one hemisphere, but then consciously rationalize it in the other hemisphere, without having experienced the making of the decision [0]:
>In one example of this kind of test, a picture of a chicken claw was flashed to the left hemisphere and a picture of a snow scene to the right hemisphere. Of the array of pictures placed in front of the subject, the obviously correct association is a chicken for the chicken claw and a shovel for the snow scene. Patient P.S. responded by choosing the shovel with the left hand and the chicken with the right. When asked why he chose these items, his left hemisphere replied `Oh, that's simple. The chicken claw goes with the chicken, and you need a shovel to clean out the chicken shed'. Here the left brain, observing the left hand's response, interprets that response in a context consistent with its sphere of knowledge—one that does not include information about the left hemifield snow scene.
[0] https://academic.oup.com/brain/article/123/7/1293/380106