Originally Posted by IanS
… what is happening is that you have a sensory system that is exchanging electrochemical processes back and forth to the brain, and the brain is creating an impression of that very real input from the sensory system. That's what I think you are calling your “experience”.
Yes, you experience that impression.
Well actually, the “impression”
is the “experience” … they are not two different things – the brain is simply creating an impression of things (the outside world) as a result of input from a sensory system ...
… there are not two different things being created as first a conscious “impression” AND then also a separate thing called the “experience”. All that you have are the thoughts … it's just those “thoughts” which you are calling “experience” and “impression” (they are also what is being called “awareness” and “mind” … the brain is a separate thing, and what it produces are our thoughts or “impressions” of things).
Originally Posted by IanS
But as far as any of us can honestly tell, that “experience” created by the functioning of the brain, is dependent entirely upon real input from a real sensory system which is detecting a real world around us.
That is not true at all. What you experience excludes the vast majority of the input gathered by your senses. It is also a highly processed, best guess estimate of the input.
I have looked for something in its usual place and found it missing, after looking everywhere else I could think of, I went back to it's usual spot and there it was, all along. I must have seen it the first time, why did I not experience it?
Well you are wrong – please look more carefully at what I said! I said that when we are talking about what the brain detects as the apparent reality of an external world, then as far as we can honestly tell, that so-called “experience” of reality in your mind, i.e. the impressions or "thoughts" that are created by your brain, are
“dependent entirely upon real input from a real sensory system”. Example (as explained before) – if from birth the brain was deprived of all sensory input (i.e. no such input whatsoever), then it seems unlikely (perhaps impossible) that the brain would ever be able to form any impressions or “experiences” of any such external reality … you would have no “experiences/impressions/thoughts” of any apparent external reality around you, i.e. no imagination of buses, trains, rivers, the sky, mountains, other people … nothing at all!
As for your example of misplacing your spectacles or whatever it was you misplaced – firstly anecdotal tales like that are notoriously unreliable and extremely poor as evidence for anything. And the reason is that they almost always fail to recognise all sorts of factors that could be misleading you into hopelessly wrong conclusions. Eg, taking your own example – the most likely answer is probably that either you did not look carefully enough (and it's very easy to explain how that happens), or else you were mistaken and the spectacles/whatever were indeed not in that specific place when you first looked for them, eg in the meantime you yourself or someone else has inadvertently put them back in that place!
But lets be clear – millions of people have claimed (for all sorts of reasons) anecdotal tales of strange or unexpected events such as you just described, but whenever those claims/stories have been carefully investigated in an accurate scientific way, it always turns out that the person was mistaken about what had actually happened, and that instead there is a perfectly simple and entirely natural “real” explanation. So examples of anecdotal tales like that are really worthless for anything at all, inc. any attempts to show that something mysterious must be going on between the passage of visual information from the eyes to the brain.
Furthermore a person can also experience a dream or hallucination during which they are totally unaware of it's complete and utter disconnect from what their senses are really receiving.
Do you accept this?
Certainly we can dream or hallucinate mental impressions of things that are not at that particular moment coming direct as input from our sensory system, however, I doubt that those impressions could arise at all without what we call “memory” of previous sensory input which the brain is then using at a later time, i.e. retrieving it as “memory”, to create false impressions/illusions of realistic looking/seeming sensations or "thoughts".
IOW – although memory is no doubt a complex issue, and not one which I think we should allow to complicate & de-rail discussions here even further, I think your examples of dreams and hallucinations are almost certainly just examples of the brain using memory of previously stored input from the sensory system, so as to create from memory dreams and hallucinations … and I expect that both memory, dreams and hallucinations are all fairly well described if not absolutely fully understood, in the relevant scientific research literature.
So to repeat, just to clarify the above – in the example of things such as dreams, what I expect is happening is simply that the brain is reproducing those impressions (they should not be called “experiences”, because they are by definition not real events) from stored memory … but afaik the stored memory has to arise in the first place from all of our earlier sensory input …
… in other words (to repeat the example that I just gave before) – if from birth your brain was deprived of all sensory input, i.e. no sensory detection/function of any kind, then I doubt that you could ever form any such dreams or hallucinations in which you had an impression of things that exist in what we call the external or “real” world around us … I doubt that you could ever dream about busses, cars, trees, cats, food, mountains, stars in the night sky … I expect all of that would be impossible if you truly never had any sensory input of anything at all to an otherwise functioning brain.
Originally Posted by IanS
When you say “If you can think you must have a mind, no doubt about it” … no, actually I do not quite agree with that either. And I think we should all retain an element of doubt or skepticism about that.
Just because something seems inescapably true, or seems to be “self evident”, we have learned in science, and even more clearly in maths, that you should avoid ever thinking thinking like that, as if to tell yourself that anything is a certainty without actual “proof”.
What does a mind do IansS?
Does it not think? Can any thinking thing not be called a mind? How would you go about thinking without a mind? If you had a mind that could not think, would it still be a mind?
Well first of all you should be aware of, and admit, that my answer above is only stressing that we should, as a principal of proper care and objectivity, be very reluctant ever to say that anything is a “certainty' (as you just said it must be), unless we can literally show an actual proof for it. And afaik we definitely cannot show any actual proof for your claim … you are instead merely taking it as a self-evident assumption. So first of all;- I'm just saying that although it may seem obvious that you could say (to quote you)
“If you can think you must have a mind, no doubt about it”, you should always retain an element of caution or doubt about stating things like that to say it's a certainty without actual proof.
However, if you want a very simple example of why that is actually the case in the specific words of your quote – what you are calling your “thinking” probably is actually identical with what you are also calling your “mind” … i.e. the thoughts are what exist as your “mind” … in which case your statement reduces to
“If you can think you must have a mind be thinking, no doubt about it”, and that makes your statement entirely redundant and without any coherent content …
… so what I would prefer to say instead (if I wanted to make a statement like the one you just tried) would be more like
“If you can think, i.e. produce thoughts, then it seems that there must surely be some mechanism or process which is causing that” … and of course I agree with all those in neuroscience, medicine, and psychology who say that all genuine modern research shows that the “mechanism or process” for producing any thoughts at all (i.e. what you are calling “experience” & “impressions”), is always a functioning brain (and that brain is of course an object of “reality”) …
… what do you say is the cause of your thoughts/mind? I say it's the physical real structure that we call the brain acting in conjunction with the sensory system etc. How would you explain any such thoughts or “mindful experiences” without a functioning brain?
Originally Posted by IanS
OK, the last of your 3 points was to say “Everything you experience happens in your mind” … well again, No! Actually, not. You cannot say that everything you experience happens within your mind, because those “things” that you “experience” as thoughts in your mind, almost certainly all occur in reality outside of your mind/brain … what's happening in your mind/brain is only that you are re-creating an impression or sensation of that external reality.
This was covered by me above but I wanted to add:
You contradict yourself, your own words concerning experience was "the brain is creating an impression".
So you already admitted that all that you experience happens in your mind, why the sudden turnabout?
It does not matter whether your "experiences" correspond with "reality" or not, it is still happening in your mind. This is the most basic of logical failures. What is your point?
OK, well first look at your actual sentence which I quoted (it's highlighted above) … as I have pointed out at least 10 times here already (mostly to Larry) – you cannot make that statement saying
“Everything you experience happens in your mind”. Why, can't you make that statement? Answer- because what you “experience” in your mind are just “thoughts” which are an unreal representation of things that are actually happening elsewhere outside of your mind,. I.e., the events which you imagine as your thoughts (you are calling it an “experience”), are
not happening in your mind at all (they are happening in the outside world) …
… all that “happens” in your mind is that your brain is producing an unreal illusion of events that actual happen somewhere else.
To explain that - look carefully at the first part of your statement, it says “Everything
YOU experience happens in your mind” …. well, YOU are not just your thoughts or “mind”. You consist of a body and a sensory system with limbs etc. as well as a brain that creates thoughts which we call a “mind”. When your sensory cells detect something, e.g. the heat of a burning flame on your skin, that is certainly
happening outside of your “mind”, it is the cells of your skin that “experience” the burning, not your mindful thoughts of it … all that you “experience” in your mind is an illusion of that burning … so you cannot claim “Everything
YOU experience happens in your mind” …
you are actually experiencing the burning at the cells of the skin, that's where the experience of any burning actually “happens” … it happens outside of your thoughts/mind ...
… what then happens is that electrochemical changes which result from the burning of the skin, are passed to the brain, and the brain processes that electrochemical input as more “brain chemistry”, and the final result of all that brain chemistry is what we later “experience” as illusory thoughts of burning that was actually experienced happening on the cells of the skin.
You only become aware of it because your brain creates that “awareness” (or 'experience”) as an illusion of what has actually happened, but what has happened actually occurred on your skin and NOT in your mind.
If you do not like the idea of the "experience" actually happening on your skin, i.e. if you wanted claim that was not what you meant by "experiencing" (though that certain
is where the events actually
happen and are experienced), then notice that your brain is also "experiencing" the effect of that burning - the burned skin cells pass electrochemical changes to the the brain and the brain "experiences" that very real input as electrochemical changes and chemical reactions ... but the result of that is, that the brain chemistry then produces as output an illusion, i.e. just thoughts, of the flame and the burning ... so the experience of what is actually happening, takes place at the cells of the skin and then at the brain as a set of electrochemical reactions ... but what the brain outputs is not that "experience" or "happening" itself, what it outputs as "thoughts" or "mental images/awareness" is just an illusory representation of what has actually happened at the cells of the skin.
Even if you wanted to take the position of a full-on solipsist and claim that only your mind exists, so that you actually have no skin or body to sense any such burning, from which you would then claim that real events or illusions of events took place only in the mind (because in that solipsist claim all that existed would be just a disembodied “mind”), then you would be straight back to the question that I posed before – in that case, if you claim you have no body and no brain to actually experience anything, then where did any of your thoughts, mind, mental-experiences come from … what caused or produce dany such effect as thinking awareness or “mind”?
OK so just to repeat for clarity - when you say ““Everything YOU experience ...”, you are not a disembodied brain! … you consist of a body and limbs etc. Any actual burning of your skin is an experience which happens there upon the cells of your skin (not in your thoughts/mind).