Modal Argument: The Mind is Not the Brain

[Brian37]

this is another complex argument developed by Plantinga. it uses modal logic so it may be difficult for some of you to grasp. since it seems many people misunderstand the purpose of my prior arguments, i'm going to be more clairvoyant with my arguments by establishing the purpose before I share the argument.
Purpose: many atheists claim the afterlife is impossible since the mind and the brain are the same. my aim is specifically against those claims, showing they are in fact not the same and establishing the independent function of the mind from the brain is possible.
Argument:
P1: it is possible (meaning conceivably possible) for the mind to act independently of the brain.
P2: it is impossible for the brain to act independently of the brain.
C1: there is an aspect of the mind that is different from the brain (P1, P2).
P3: if two things are the same (meaning same identity), they must have exactly the same aspects and properties. if there is a single aspect that is different, then the two are not the same.
C2: the mind and the brain are not the same (C1, P3).
Conclusion: the mind and the brain are not the same thing, therefore it is possible for the mind to function independent of the brain.

Objections:
1. this doesn't prove the mind can function independent of the brain-- correct. it only proves it's possible, which is all this argument aspires to establish.
2. but what happens to the brain can affect what happens to the mind, so that proves they are the same-- that may be true, but that only establishes a connection not an equivalence. the brain can affect the mind without being the same as the mind.
3. P1 is false therefore both conclusions are also false-- in that premise I was speaking of conceivable possibility. it would be easier to understand that with some basic knowledge of modal logic. what it means though, is we can conceive of such a thing happening without creating a logical incoherence. it can be shown that it is not incoherent by the numerous stories/movies of people who have their minds switched, or transferred, or astral project. we can conceive of such things without thinking it incoherent, therefore it is conceivably possible.

Sorry, nothing scientific about this at all. It is mental masturbation. "We" are merely what we call "I" being our brain in motion. Once the structure is no longer functioning, you are dead. You are your brain in motion, nothing more.