Showing posts with label mind. Show all posts
Showing posts with label mind. Show all posts

Apr 17, 2008

Free WIll

There was a report in the news that some neuro-scientists had determined from brain-scans that our brain actually make a decision before our conscious mind is aware of it. The scientist being interviewed seemed to believe that this finding invalidated the concept of free-will. This reminded me of a question I often get asked; does Buddhism believe in free-will?

Turning to the scientific finding first; just going on the interview I heard, it's hard to see how these findings, or any imaginable findings from brain scans could prove or disprove free-will. How can they possibly correlate a pattern of brain-activity with a specific mental process which is unconscious to the person? Could they really know, for instance, if someone chooses coffee or tea by the brain pattern? As I understand the theory, they are claiming that the brain makes the decision unconsciously and that conscious awareness simply reports the result, under the illusion that it is actually choosing.

The bigger problem with this kind of analysis is whether we can really call an unconscious process a mental event. Does the whole psychological concept of a sub-conscious actually make sense, except as a crude short-hand for mental events (pali dhamma) of which consciousness is not fully attentive? But then I don't believe that conscious awareness is a product of brain function at all. These brain studies are interesting, but the practical results are muddled by the researcher's physicalist assumptions.

As for Buddhism and free-wil, the question allows of at least three answers, at different levels. In the first place, it should be pointed out that the question itself is something of a category error. The free will vs. determinism debate comes out of western philosophy, not eastern. In it's original form it wrestled with the problem of how free-will could be reconciled with an omnipotent and omniscient deity. If God knew from the creation that I would choose coffee and not tea, is my choice really free? When western thought moved from theism to materialism it took the problem with it, only with blind electro-chemical processes replacing the big guy in the clouds. Since Buddhism isn't encumbered by either the theist or materialist axioms, it isn't bothered by the question in the same way.

On a second level, and in a slightly different form, the question does come up though. The Buddha opposed the hard determinism of Makkhali Gosala with his little ball of yarn. (He would demonstrate his theory that everything was fixed from beginingless time by unrolling a ball of yarn, teaching that beings moved through various rebirths in a fixed order from beginning to end like the unrolling yarn.)

Furthermore, the Buddha said it was an error to teach that all things are determined by karma. This flat statement has been interpreted in various ways. However, in my humble opinion, the statement was made specifically to allow for a kind of free-will. You won't find it laid out so neatly in the Suttanta, but in Abhidhamma it is made clear that in the sequence of conscious mind-moments the sensory awareness of sights, sounds and so forth is determined completely by various factors, including past karma. However, there are other mind-moments (javana) where we make karma, and there the possibility of choice is present.

So, by this Abhidhamma analysis we could say that the present moment experience is always absolutely determined, but that the volitional action we take in response is free. Technically, it involves the factor of cetana or volition. This raises a further philosophical difficulty however. The dependent origination teaches us that everything except for the supramundane Nibbana element arises from past causes. So that would include cetana, so how can our choice be truly free?

The answer is the third level answer, which comes around at a higher level to the first approach. The false assumption still remaining in the previous paragraph is that there is an I who chooses coffee over tea. With the insight of anatta or not-self we dispense with the whole problem of whether a person is free by dispensing with the person. There is only the interplay of various physical and mental factors, one of which is cetana.

These various complexities were wrestled with in Buddhist India, and it may be that the Mahayana concept of the Tathagatagarbha ( the seed-of-buddhahood said to be present in all sentient beings from beginingless time) may have been an attempt to answer one particularly knotty form of this dilemma; how is it that beings who have always wandered in samsara, with only samsaric mental content, could ever develop a volition for seeking the transcendental?

Apr 5, 2008

Mind is the Forerunner

Every Sunday, we have a sutta study class that I lead. The other week we did the Agganna Sutta, the Sutta on "origins," and once again I was struck by this powerful mythic vision.

In this Buddhist version of Genesis, the earth in primordial times was dark and watery; an unformed primeval chaos. The first beings to appear by the force of their karma from previous world-systems were god-like entities, "self-luminous, feeding on bliss." As the earth congealed, a nutritious substance formed on it's surface ("oja") which intrigued the god-like entities and piqued their curiosity until some of them tried tasting it with a little on the ends of their fingers. Immediately upon ingesting gross matter, they fell from their high station and became gross material beings upon the surface of the earth.

In the history of our planet as reconstructed by modern science, there was a mysterious event called the "Cambrian Explosion." Prior to that time, some half-billion years ago, there were only algae and other simple one-celled organisms. Then, in the blink of a geological eye, the seas were suddenly filled with an astonishing array of complex life-forms. The lord of the world then was the trilobite.

These two visions describe the same event, which I suggest is the descent of mind into this gross material plane. The real explanation of evolution, it's hidden mechanism, may be the play of mind trying out new forms to manifest itself in this level of reality. Natural selection, as posited by Darwin, surely plays a part; unviable forms will be pruned ruthlessly. But it doesn't seem a complete explanation. Creationists love to point out anomalies like the impossibility of complex systems such as a working eye arising all at once. But why would a creator god stick us with an appendix, for instance?

I have argued before that the biggest single anomaly is human intelligence itself. Our hyper-trophied brains are a huge biological deficit; they consume an inordinate amount of the body's calories and our large-headed infants make childbirth more difficult and dangerous than in other mammals. Once our brains had reached the level where we could consistently outwit our prey species, strictly mechanistic Darwinian theory should have stopped further growth. Beautiful and haunting as they are, the Cro-Magnon cave paintings had no strictly survival value.

Materialists insist that brain generates mind. The truth may be quite the other way around. This would certainly be consistent with the teaching of the dependent origination, "because of consciousness, name-and-form (body and mind)" And the Dhammapada, "Mind is the chief, mind is the fore-runner."

I would venture a prediction. If we manage to get through the coming climate crisis with any kind of civilization intact (granted, a very big "if") the next big revolution is science will be the recognition of mind as a separate category independent of matter and energy. Materialism will come to be seen for what it really is, an out-moded superstitious way of thinking. Many of the mysteries of science will become clear. Quantum mechanics will begin to make sense once the mind is allowed as the observer which collapses the wave-function. We will realize that the universe is indeed, in a sense, created but that we ourselves are continually doing the creating. The initial breaking of the symmetry after the Big Bang, the arising of the trilobites, the emergence of homo sapiens all these are easier to explain when mind is taken into account than otherwise.

If that happens, it won't mean the end of human hubris. If we ever do get a technological fix on actual mind, perhaps in the form of Sheldrake's "morphogenetic fields," we might really get ourselves into trouble. The potentials for messing around are literally unimaginable now. Genetic engineering will seem like the crudest kind of tinkering if we can access the underlying informational fields that govern all living forms. It certainly won't mean the end of samsara, at best we may become something like the Nimannarati Deva, the "Gods Who Delight in Creation." Think of Q in Star Trek.

Mind has entangled itself in matter, in samsaric manifestation. Driven by desire ("that oja looks kind of tasty") it seeks always new experience, new manifestations, new forms of delight. The wisdom of the Buddha was to cut through all of that, to seek transcendence of all forms, all manifestations no matter how god-like. The trilobites were our first mistake.

May 25, 2007

Evolution of Consciousness?

Many, if not most, people nowadays are pretty sensitive to the various kinds of chauvinism; national, gender, religion, age and so forth. One pretty big one that goes unremarked is what might be called historical chauvinism or prejudice against the past. This goes hand in hand with what I've called The Myth of Progress, the casual assumption that things are continually getting better, and we're getter smarter, more moral and probably better looking.

I've doubted this for some time, and I'm not the only one apparently. Here's a thought-provoking essay by Jared Diamond about The Worst Mistake in Human History. (spoiler: it was the invention of agriculture.) I've often thought that the high point in human history was the Cro-Magnon period. By high point, I mean the time when people were happiest. Who wouldn't rather be out hunting wooly rhinoceros with the boys than digging in the dirt for your over-lord in Sumer?

Something I've often wondered is how different our minds are from those of our ancestors. Various writers have broached this subject, but most like Julian Jaynes with his Bi-Cameral Mind theory, begin by assuming that the present model is more correct and interpreting ancient ways of knowing in a manner that makes them equivalent to pathologies.

Some time ago I read an article by a Christian writer about angels (sorry no reference, I'm winging it here, no pun intended.) He had one quirky idea that stuck with me. He suggested that the invention of perspective in the Renaissance wasn't really an invention at all. The odd flat scenes in Medieval painting wasn't a lack of technique. It was, he said, a faithful representation of the way people actually saw things.

Then came a shift in human consciousness around the middle of the 15th century and suddenly we were seeing things in 3-D. We had entered fully into the material plane and while gaining a better perception of that realm, we lost contact with the spirit realm.

I'm not sure I buy this theory, it sounds too much like a classic Calvin and Hobbes routine. But in a broader sense, I think he's on to something. Something did change around then, and arguably not for the better. The religious hysteria that gripped Europe for two centuries was perhaps a symptom of a loss of contact with higher consciousness, and a desperate attempt to refind it. When the dust settled from the Reformation, there followed the Scientific Revolution and the increasing knowledge and mastery of the arena left to human consciousness, the realm of matter and form.

In my more optimistic moods, I think this may be a phase we as a species needed to go through. Perhaps we needed to work out a deeper relationship with matter before we could return to spirit with fresh insights; an upward turn of a spiral. In my pessimistic moods, I think it was the beginning of the great crash of our species.

In no case do I buy the view that we are wiser than our ancestors. Nothing comes without a price, and our culture's descent into materialism has cost us dearly.

May 23, 2007

Footnote to "Mind and Body"

Anonymous posted this on the "Mind and Body" thread;

check out the work of the late professor Dr. John Lorber on the student without a brain who went on to graduate with an honours B.A in Maths at the university of Cambridge.
Most of current knowledge is simply the 'party line' cross it at your peril.
You can read about this case here: Is Your Brain Really Necessary?

An excerpt;

This case is by no means as rare as it seems. In 1970, a New Yorker died at the age of 35. He had left school with no academic achievements, but had worked at manual jobs such as building janitor, and was a popular figure in his neighbourhood. Tenants of the building where he worked described him as passing the days performing his routine chores, such as tending the boiler, and reading the tabloid newspapers. When an autopsy was performed to determine the cause of his premature death he, too, was found to have practically no brain at all. Professor Lorber has identified several hundred people who have very small cerebral hemispheres but who appear to be normal intelligent individuals. Some of them he describes as having ‘no detectable brain’, yet they have scored up to 120 on IQ tests.
This comes from a web-site with a lot of fascinating and strange stuff, Alternative Science.

May 16, 2007

Mind and Body

From the comments, Doug Rogers said;

Mind is what the Universe does. All the causes and conditions come together to birth consciousness. In my understanding then, Consciousness is just a consequence of having a form to contain it. This is rather like Pinker's radio, tuned to a frequency and capable of receiving, like Brain/Body --> Mind. Really there isn't a difference between Brain/Body/Mind. We're bound by the language to make the distinction, and as such, there really isn't a distinct edge we can draw -as to self- between the fingers, the fingers on the keyboard, and the keyboard while in the act.

As far as Mind is concerned, Body is just a filter for sensation. Until a whole lot of neurons come together, there just isn't consciousness. Is there Mind before then? What exactly is reborn? Isn't this anthropomorphization a dangerous and misleading trap? How otherwise to say it? Is this some mal-understanding between English and Pali?

Is mind an effect, spontaneously generated with each sentient form? Or does Mind find form to birth into?
Let me try and clarify the Buddhist position on the mind-body problem, as I understand it (the last clause is an important caveat!)

I think the assumption made in the sentence "Until a whole lot of neurons come together, there just isn't consciousness" is unwarranted. The very first verse of the Dhammapada states that "mind is the forerunner" and it seems to me preferable to say "until mind enters the womb, there just isn't a structured network of neurons."

There isn't any strong a priori reason why one of those formulations is more logical than the other. The first is the default assumption of modern thought, but that doesn't make it either correct or logical.

The latter is the formulation that is in accord with the dependent origination, one of the cornerstones of Buddhist teaching. "Because of consciousness, there arises name-and-form." According to the dependent origination, mind does not arise out of matter (neurons), rather the reverse. If not strictly speaking matter, certainly form (organized matter) does arise out of mind. Brain is something mind does, not the reverse.

This is an odd way of thinking for most moderns, but there may be a theoretical basis in science to explain it. The biologist Rupert Sheldrake raises the serious problem of morphogenesis, i.e. when all the cells in a body have the same DNA, how do the embryonic stem cells "know" how to turn into liver cells or brain cells and organize themselves into complex organs?

This problem is profound, and is quite insoluble if you start with the ordinary materialist assumptions. With everything we know now about DNA the only mechanism we can demonstrate is coding for protein sequences. That seems to be all the DNA is capable of doing. And the problem cuts deep. Once a string of amino acids are combined into a protein string, this string must then fold itself into a workable shape. A given string can fold into a very large number of possible configurations, but only one will do the job intended. How does this bit of insensate matter "know" what is required? A purely physical explanation is impossible. And this only the lowest tier in a long hierarchy of increasingly complex maneuvres required to create an organism.

Sheldrake's explanation is something he calls "morphogenetic fields." These are pure information fields, without any physical location in space (non-local). This sounds vanishingly close to the Buddhist idea of Mind. Mind has no physical characteristics such as size, shape or location. It is everywhere (boundless) and nowhere (void). Thinking about Mind using physical concepts is to make a grotesque category error.

It's quite possible that in a hundred years time the philosophy of materialism will be just a quaint foot-note in the history of science, alongside the phlogiston theory of combustion and phrenology. It's easy to see how it arose in the first place; in the first three centuries of the modern scientific revolution (roughly starting with Newton's Principia) it has provided an enormously powerful explanatory matrix. This only started to get wobbly in the first half of the twentieth century, with quantum physics.

Nevertheless, nineteenth century habits of thought die hard and the materialist view remains strong. What is harder to understand is why it is so much taken for granted. It is really a quite unnatural way of thinking. Consider; mind is what we know directly. Matter (and the external universe) we only know second-hand, strictly speaking as an inference. Is it natural to assume that that which is immediately and surely known is derived from that which is only inferred?

Feb 14, 2007

Mysteries of Consciousness

There's a very interesting article posted on the Time web-site, Mystery of Consciousness by Steven Pinker. (Author of the very good book; The Language Instinct. )

This article presents a light over-view of current thinking in neurology and consciousness research. Pinker states early on the nature of the so-called "hard problem," explaining consciousness in terms of brain function;

The Hard Problem, on the other hand, is why it feels like something to have a conscious process going on in one's head--why there is first-person, subjective experience. Not only does a green thing look different from a red thing, remind us of other green things and inspire us to say, "That's green" (the Easy Problem), but it also actually looks green: it produces an experience of sheer greenness that isn't reducible to anything else. As Louis Armstrong said in response to a request to define jazz, "When you got to ask what it is, you never get to know."
In abhidhamma terminology, that would be cetasika and citta. This statement of the issue is important because not so long ago western concepts of consciousness were mixed up with cognitive thought. I once read a very good history of chess written in 1948. The last chapter, The Future of Chess, contained a speculation that some people were claiming that one day a machine would be able to play a decent game of chess. The author thoroughly debunked this ridiculous notion by pointing out that the permutations in a game were literally astronomical so it necessarily takes a "conscious entity" to make " the intuitive decisions" between possible moves.

So conciousness is now being correctly defined. It only took western science twenty-five centuries to catch up with the abhidhamma.

But Pinker immediately follows this with the following;

The Hard Problem is explaining how subjective experience arises from neural computation. The problem is hard because no one knows what a solution might look like or even whether it is a genuine scientific problem in the first place. And not surprisingly, everyone agrees that the hard problem (if it is a problem) remains a mystery.

Although neither problem has been solved, neuroscientists agree on many features of both of them, and the feature they find least controversial is the one that many people outside the field find the most shocking. Francis Crick called it "the astonishing hypothesis"--the idea that our thoughts, sensations, joys and aches consist entirely of physiological activity in the tissues of the brain.
I think it is fair to ask why this has to be assumed. Pinker admits that science hasn't got a clue how it could work, and yet remains convinced that somehow it does. Crick's statement may have been an hypothesis to begin with, but it's now become an article of faith, i.e. a statement held to be true without any evidence.

Pinker does offer a couple of facts as evidence; that neuro-scientists can tell a lot about what a person is thinking by looking at an MRI of their brain, and that mental processes can be affected by physical manipulation (electrical or chemical) of the brain. But the reasoning is faulty; these things demonstrate only a strong correlation between mind and brain, they do not indicate causation. It's more than a little bit like claiming that the rooster crowing every morning makes the sun come up.

When speaking about brain-waves, Pinker says "a bit like radio transmitters and receivers tuned to the same frequency." Without intending to, he has hit on an alternative metaphor that may be closer to the truth. Physicalists like Pinker rely on what has been called "the computational model" of mind. In this theory, brain is like a computer and mind is like the software running on it. An alternate view could be called the "radio model" where brain doesn't generate mind, but acts as the physical interface for it.

The glaring problem with the computational model for the "hard problem" is that consciousness cannot be reduced to an algorithm. This argument is inherently simple, but difficult to explain briefly. (Roger Penrose's book, "The Emperor's New Mind" takes hundreds of pages and then he waffles a bit on his own conclusion.) But the idea is that everything done by a physical machine must be, in theory at least, be able to be explained in terms of a step by step analysis of action. (an algorithm) Think of a Rube Goldberg cartoon. A computer program can always be printed out in machine code instructions which tell the chips in a systematic way what to do.

The problem is not that consciousness is so complex, it is that is too simple to be reduced to an algorithm. Everything else, possibly, could be. When we look at an apple, there is a very complex series of events beginning with light of specific wavelengths stimulating the sensitive cells in the eye, and impulses travelling through the optic nerve to the brain. However, at the end of the sequence, there is just pristine simple knowing.

A machine these days could easily be imagined that could sort apples and pears. A camera could send visual data to a processor that could sort the objects by colour and shape. (The Easy Problem.) However, the machine would have no experience of seeing an apple. (The hard problem) I would contend that this is because having an experience is not a mechanical process.

Western philosophy of mind debates have been stuck in a controversy between the physicalists and the dualists. A dualist believes in "the ghost in the machine." The problem is, this is really just another kind of materialism, it is sometimes even called "substance dualism." In Buddhist theory, Mind is a separate category from Matter, neither of which is reducible to the other, so we agree with the dualists on some points. However, Mind is also seen as utterly void of substance. There is no "ghost" in the machine. There is a process happening that the machine can tune in to. Brain, I would argue, serves as the physical interface allowing mind to manifest in matter.

Far from mind being a product of brain, the reverse is closer to the truth. Mind in the womb serves as a guiding principle for the unfolding of matter into a new organism. If you think this is far-fetched, read maverick biologist Rupert Sheldrake. He points out the problems involved in explaining morpho-genesis (the unfolding of cells and organs in an embryo) in strictly physical terms.

It is a curious feature of the history of science that while physics in the twentieth century began to approach the idea that Mind is an independent actor in the world, (the observer being necessary to definitively kill Schrodinger's cat) biology remains committed to a nineteenth century naive materialism. Perhaps in the future physicalism will be remembered fondly as an intellectual folly like the universal ether or the phlogiston theory of combustion.

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Cranky addendum - why do big media sites like Time break up articles like this into separate pages, making searching for quotes and off-line reading problematic? Could it be to make us look at more ads? Nah....