@Lola,
Lolaessense wrote: The human self exists in the human brain. The brain is an organ in the human body. It functions in a complicated way but let's just say for now that it is powered by chemical reactions. We experience this activity as thoughts and feelings about ourselves and others.
Yes. I generally agree.
There are systems like the human brain which can exhibit very complex behaviors. These behaviors result from a complex interaction of much simpler pieces (be they neurons, molecules, etc.). A property of the behavior in such systems is
unpredictability.
Unpredictable in a sense that is more like
un-post-dictable.
Unpredictable in the sense that it is logically,mathematically, and physically impossible to look at the present state of the system and determine what the state was like in the past.
Unpredictable also in the sense that in order to
pre-dict a future state all
of following would require many potentially implausible things.
REQUIRED FOR PREDICTION:
There could be no influence from outside the system.
Time would have to be discontinuous.
An, in some sense, identical system must be created.
That
"in some sense" identical system would have to be in an
actual sense faster than the original system it models.
The model system must be set to exactly the same state as the original system, requiring an exact knowledge of the present state of the original system.
The model system must be run for exactly the equivalent number of iterations (think of this as exactly the right amount of time).
If any of the requirements are not met, in the sense of one being even
slightly not met, then the prediction could be very very far off.
(Colloquially called the "Butterfly Effect")
This unpredictability seems to clash with a view of the world that is strictly deterministic.
But that's OK, because...
Even if we assume strict determinism we can create those effects.
These effects were demonstrated in a strictly deterministic mathematical model. One such model was discovered by Steven Wolfram using
cellular automata.
Cellular automata are very (read extremely) simple. Much simpler than atoms. You may remember them from their staring role in:
The Game of Life (early computer game)
I want to demonstrate this principally to show how it is
not unreasonable to speak of behavior originating
from within a system.
And if things like "free will", "self-ness", or consciousness are manifestations of such systems, then it is reasonable to speak of them as
originating from within such system.
I hope to come back to this topic or the rest of the points your raised later.