Yes, I am fully aware that a brain transplant has not been done before, and that the mind/will/emotions/life experiences, etc. would probably not go with it. Lost in the process? Where would it go? Would it continue to exist in some form?
I will try to give you another long analogy. Say the brain is the hardware, just like a hard disk is a physical hardware. You can format it, store data on it, data that would account for a person's entire life experiences, resulting from decisions and consequences. Let's say it is a movie reel that accounts for every thought, emotion, life experience and a disclosure of the mind and will of that individual.
Let's say, the AI built into the hardware is the firmware operating system that drives the cognition, which exhibits the characteristic of that individual, and determines how that individual learns and interacts with themselves and others.
Let's say, the user account that has a security log on into the firmware is the soul identity which uses both the hardware (brain) and firmware (operating system), as a tool extension to the user to perform a function from an Ethernet or ethereal cyberspace point of origin.
The user doesn't exist in the hardware and doesn't exist in the operating system firmware.
The account user has authorisation to use the hardware and firmware, as a single user licence granted to him/her by the Creator at conception. So that the account in itself has no administrator rights or privileges to create another account, on another hardware platform, for all men are destined to die once and then judgment (Hebrews 9:27). The user can delete his/her account, if suicide path is taken and at this point, the user is permanently locked out from their account and is prevented from having any more privileges to use another piece of hardware platform, as they were married to the hardware platform at conception.
God as system administrator can remove user account privileges and can even lock or delete an account. I believe account deletion is the second death in the Lake of Fire, where the repository of locked out users in ethereal darkness is finally erased and the soul ceases to be. As scripture states.....
Matthew 10:28
And fear not them which kill the body, but are not able to kill the soul: but rather
fear him which is able to destroy both soul and body in hell.
User account is not in the physical realm of the hardware (brain) or firmware (Operating System). The user is within the ethereal realm of God and is like an avitor with assigned privileges in using that account as a single user, married to the hardware and firmware at conception. In scripture it states.....
Revelation 20:4
I saw the souls of them that were beheaded for the witness of Jesus, and for the word of God.
Revelation 6:9
I saw under the altar the souls of them that were slain for the word of God, and for the testimony which they held:
Those who were beheaded under the altar of God.
The altar of God is this soul repository of users who have within the ethereal (non material) God's cyberspace realm accomplished their stated functions and are awaiting to be reassigned to another interface as the same users, albeit in a completely different firmware (operating system) within the nexus of God. Notice I left out the hardware, because this maybe a cloud based reality without the need of a hardware avitor, like the human brain and its firmware cognition.
Aside from the above paragraph.......
Relocating/migrating a user account to another piece of hardware and firmware requires assignment of privillages for that interface. God gives it his HTTPS secure code privillage to access a specific hardware at conception and the assignment of user account privillages is accessible only to the system administrator who is God and he is the only one who can grant access to a piece of hardware.
As technology grows, humans cannot relocate their user accounts to another piece of hardware, because their user accounts are within the ethereal realm. As soon as an individual biologically dies, their user account is suspended (locked) and becomes inactive and cannot be used as an avitor for another's piece of hardware. This soul identity is the user account and it is not the hardware (brain), neither is it the firmware (O/S = brain cognition). As soon as an individual looses connection to their central nervous system, which includes brain and spinal cord, they are locked out of their account by the administrator and cannot log back onto their account, since that user account is married to the hardware at conception. Same principle is used with proprietary laptops that have single user licenses married to that particular hardware. Sure those laptops can be hacked to get permission of other users, but AI scientists who thing they can hack God's Creation Ethernet (ether) are obviously insane and they don't know that to do so, would mean to act as system administrators in place of God and this is not going to happen ever.
We are told that AI and cybernetic engineers are planning a cacophony of ideas that are going to deceive users within God's ether to join their bandwagon and in the process, their user accounts (soul ID access code) will be revoked by God and the result will be an extermination of the human race by an act of deception, thinking that they have migrated their themselves (user accounts) to another hardware platform, because the AI will exhibit the character of that individual but it is not that individual, but only a movie reel play of an individuals experiences without the individual present, if you get what I mean. The deception will have people jumping on the bandwagon and flatlining their brains to get that knew body, only to realise that this is no different to the act of suicide, because their user accounts will immediately get locked out.
The AI cybernetic avitors that will roam the plain of this earthly reality will not be users (souls) but just adaptable algorithmic patterns of what was once a living soul. Scripture does warn us about this deception befalling humanity as depicted in movies such as Blade Runner 2049.
Scripture states.....
Daniel 2:41-43
41The feet and toes you saw were a combination of iron and baked clay, showing that this kingdom will be divided. Like iron mixed with clay, it will have some of the strength of iron.
42But while some parts of it will be as strong as iron, other parts will be as weak as clay.
43This mixture of iron and clay also shows that these kingdoms will try to strengthen themselves by forming alliances with each other through intermarriage. But they will not hold together, just as iron and clay do not mix.
Obviously Daniel prophecies about the human race and the two kingdoms are symbolic of two worlds merging with one another, that is the clay which symbolises humanity, with AI cybernetics which is the iron. These two worlds will not marry together, because they are incompatible to be married and that God as the systems will not permit user accounts (soul ID) to be migrated to a different hardware/firmware platform, because the soul ID is not accessible to creation, but is God's very own ethereal repository.
God does warn humanity what will result from this misadventure.....
Matthew 24:21-22
21For then shall be great tribulation, such as was not since the beginning of the world to this time, no, nor ever shall be.
22And
except those days should be shortened, there should no flesh be saved: but for the elect's sake those days shall be shortened.
The Abomination of Desolation that sits in the Holy Place, is by removing the daily sacrifice and putting in its place something else. Since the Temple of God is the human vessel and we symbolise the Living Stones of the Temple or Holy Place, then if humanity tries to embrace something against God and that will certainly bring destruction, that would highly suggest that it is connected to the extinction of flesh, that is extinction of our species, being replaced by something else.
AI cybernetics will ultimately be the Abomination as many Hollywood movies depict a future reality for humanity. If people wanted to extend their lives, then they would be led astray into believing that merging with machine, that is biomechanically engineered, like the series West World will give them immortality, whilst forgetting that when they take that step, they are locking themselves (user account soul ID) from the earthly realm, by the inadvertent act of suicide without them knowing, as they are flat lined (locked out) and replaced by an algorithm of what emulates them, just like how animals are natural AI living organism without a user account (soul ID).
Scary place and a scary future indeed!
So yes, it was a hypothetical.
The point is that if we were able to do that, the identity of the person (soul) would be in the contents of the mind, not in the physical entity it now inhabits.
After what I have at length discussed above, the identity of the person (soul ID) is not the hardware (contents of the mind) and neither the firmware (cognitive characteristic of the mind).
The cognitive characteristic of the mind is an operating system that allows your user account access privileges. The contents of the mind can be emulated without ever being present the user and in this regard you are not the hardware (brain and spinal cord = central nervous system) and neither are you the firmware (cognitive characteristics of the mind and its stored content). You are an avitor existing within the ether of God as a single user licence, who has been married to the hardware and firmware at conception. Removing the contents of the mind and migrating them to another hardware platform will mean that your user account access will be revoked and you will not be the contents or the mind that drives let's say the AI cybernetic half clay and half iron creature.
Please read what I have carefully explained. As an engineer, I have also worked in the field of Artificial Intellegence, Mechatronics and Automation and Fuzzy Control software learning algorithms. The idea of migrating the contents of the mind is not different to teaching something how we are and how we behave and react, just like animals emulate humans as companions, but there is no one there. When you look at animals, no one is there, they are emulating you and you think they are the next best thing to a human companion. God certainly tested Adam and found that animals emulating Adam becomes a bore for Adam.
God is the first to create AI living organisms in the very creature, the living organisms. Even the simple cell is a living AI ORAGNISM. The layer of control is when humans who are created in the Image of God were given access as remote Ethernet users access to these AI forms.
In the resurrection the form we will have is not made known as the apostle John stated, but it will be a different user interface that God assigns different user privileges for that particular user within his ethereal nexus.
1 John 3:2
Dear friends, now we are children of God, and
what we will be has not yet been made known. But we know that when Christ appears, we shall be like him, for we shall see him as he is.