Mind is a brain?

For a moment, let's look this at materialist viewpoint.

Assumption: mind is in brain.
Assumption: mind is separate from environment.

Brain, to exist, needs environment support.
- Brain would be destroyed instantly, if there would be unsupporting environment.
- If we can build an artificial environment, it must have properties of natural environment, thus it must be prostheses of it in the same way we can have heart prostheses.
- Biological reactions of brain, to make sense, must thus be in connection with _correct_ environmental reactions.

Thus, assumptions that mind is brain and mind is separate from environment contain contradiction.

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The case is somewhat related to following observations:
- We can not find strict definition to separate some object from environment in such way that we could tell about every electron if it's part of an object or part of an environment using the same definition on both.
- This is easier to see if we physically connect (put very near to each other) two objects and say that there should be such definition of borders that this is the same for both objects and for every electron, we must be able to say if it's part of one or another.
- We run into more complexities, anyway, if we want such distinction to make sense.
- Any kind of processes in brain are directly dependent on many processes in environment.

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As those run into contradiction, there comes another logic:
- Assume that mind is brain.
- Thus, environment is a part of mind.

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For non-materialist viewpoint, the logic to connect environment and brain is different, but if environment is part of a mind, then it becomes nonsense to say that mind gets information from environment only through "five senses".

Doing any kind of brain research assuming that it's separate entity does not, thus, research the whole physical object. It researches logic of a part of it, taking a supporting environment as granted - change environment and none of this logic applies anymore.

This becomes more clear through the following:
- We can actually get proteins from air or through skin [and we can not exactly say, when it enters our body.
- All activities of our brain are directly related to the structure of electromagnetic and other fields around us - this is very easy to show that reactions of neurons without those fields do not support life.
- To say that we can not directly sense those fields in any way is to say that we could not sense if activity of our neurons is going to end through death if those change into non-life-supporting condition.

Or, in short: there is no such system as "brain" to be looked in isolation in case we want to explain anything with brain. Many other processes are _part of_ reactions in brain and thus, if mind is reactions in brain, mind must be bigger than brain. Many other fields are part of structure of brain and if mind is brain, those fields should be removed from it, which is physically impossible.

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Mind is not brain.