Showing posts with label Consciousness. Show all posts
Showing posts with label Consciousness. Show all posts

Saturday, April 17, 2010

Wrapping up Plato

Think for a moment about what it might be like to be a baby. Sure you’re adorable but most of your few waking hours you lay drooling, with blurry vision, no understanding of object permanence, unable to remember or recognize much of anything or any one besides mom and dad. How do we get from that to where you are today (which hopefully does not involve you needing to wipe your chin and be burped)?

Well, babies don’t seem to have a lot going on with their minds but they do have bodies. And Plato realized that the most basic thing about a body, any kind of body, is that bodies are the type of thing into and out of which things flow. Sure enough, this describes babies pretty accurately.

Well, how can something that is constantly leaking and being invaded possibly keep intact, much less grow and thrive? The short answer is sense perception. A living body is going to have to have the capacity to monitor what’s going in and out of it to some extent, even if it can’t immediately do anything with the info. This insight makes Plato say that in a way, sense perception flowers out of the “forceful disturbances” of the outside world.

While sense perception is essential to a living body such as a baby surviving, social animals such as humans are going to need more built-in capacities to survive and thrive. Plato thinks social animals would have to have built in the ability to feel pleasure and pain and the capacity to love. The first two probably make total sense, but what about the third? Why does Plato think social animals like us need to be born with the capacity to love? Well, it’s pretty tough to think of a society, even if it’s a wolf pack, where the members don’t have a strong bond with each other. And assuming that wolves can’t get to know each other’s interests and become friends and partners that way, then they must be bonded to each other some other way. So the idea is that societies form from a natural, instinctual kinship. If Plato were alive today he’d say it’s in our genes.

On Plato’s theory, we start out as these leaky bodies with the tools to sense perceive, to feel pleasure and pain, and to love. But he didn’t say the tools are automatically used or used well. Still, based on these we also soon come to have fear, “spiritedness” (a ‘fire inside’ sort of like pride) and “whatever goes along with having those emotions” and their opposites. What gets us to make use of all these capacities are forceful disturbances” of our bodies.(An aside I discuss elsewhere: the fact that the basis of mental life, of intelligence, is the physical reality of our bodies, the needs we are born with because we have bodies, is the real problem undermining AI research).

Now remember we talked about their being a brain psyche (mind) and a body psyche (emotions + appetites). As babies, our body psyche is clearly way more advanced than our brain psyche, and more specifically, our appetites are running the show. But we have the emotions right there too. As the outside world makes its presence felt and our appetites assert themselves on us, we begin to use the basic tools we just mentioned. Imagine being a baby again. You’re pretty well clueless as to what’s going on around you but when you want something you are agitated, you want it now. It hurts a lot not to have it and it feels great to get it. As Plato says, the appetites are a beast whose sustainment cannot be avoided “if a mortal race were ever to be”.

But it seems wrong to say you spend all your time awake afraid, it doesn’t seem as if babies flail around all day terrified of things so much as it seems they are just waiting for (and occasionally looking for) stimulus. When the stimulus comes, it is either pleasing or not. If it is pleasing they want more until it loses its luster, and when it is painful they want it to stop immediately. And in each case the body has ready at hand responses, clumsy as they may be. Over time, just like any dog or chimp, it will learn to be afraid, or to be hostile, or to care about different things.

To get along much farther than dogs or chimps though, junior is going to have to develop her brain psyche to master its emotional states. To the extent to which she can do this, Plato says, her life will be just and she’ll gain the reward of a “life of happiness”. If the emotions master the psyche, though, or if the appetites go unchecked, look out.

Speaking of the appetites (whatever a body, given its nature, feels a need for): Plato thinks it’s quite important that for anything with powerful appetites there’s immediately a clash between those appetites and the outside world, which is totally indifferent to them. This is the original version of what for humans will become the main moral issue of the rest of their lives: the tension between what you want and your realizations that other people want the same for themselves, and that the world is indifferent to any desires at all.

Let’s review what Plato has said so far. At the core of what we are as bodies imbued with minds, what starts our mental lives and mental development, is the physical ‘violence’ done in and upon our bodies - and so our minds. Our brain psyche is going to have to work with our body psyche and more specifically, our emotion-psyche in our lifelong struggle with the “mighty river” of desires coursing through our body. At first the brain psyche is pretty much just going to get tossed around by the current and we’re going to suffer everything from blurred vision, to clumsy grips, to bladder control issues, to constant crying. And when our bodies collide with the outside world, well, that’s going to be a whole other set of problems.

However, we have built in the mental capabilities to have reasonably effective “baseline responses” to our internal needs and to external impositions, (even if at first they don’t amount to much more than crying and flinching). Over time these responses are honed and changed as our bodies, piloted by our body psyche, have more experiences and develop more coordination. But you need to realize how important this observation by Plato is: this means that our bodies are conduits of information – for themselves and for the brain psyche. The body psyche is replete with information about our changing internal physical states, whether they are caused by other internal events or by external events flowing through us and out of us. All of it registers with us even if we aren’t conscious of it or cognizant of it and the body is capable of acting on some info while ignoring other info. (Its really a kind of judgement, an idea I'll be talking a lot about towards the end of this project.)

Eventually, the appetites’ initially overwhelming force gets mitigated, and as time progresses, the rational or cognitive mind establishes itself more and more, to a degree such that like a successfully adapted animal, the growing person can more and more control its body and get what it wants out of its surroundings. The brain psyche becomes more and more “intelligent”, more and more capable of applying the concepts of sameness and difference, without mastery of which there no judgement and so no deliberate action. We’ll return to Plato and the tripartite soul at the end, but for now we have enough to move on and watch the basic Platonic psychology develop and evolve in the capable hands of Aristotle.

Wednesday, March 10, 2010

Moving on from Homer


Recapping up the discussion of Iladic people
Let’s recap on what the mental lives of the Iladic people were like. These people didn’t distinguish well at all between ‘thinking’ and ‘emoting’, and used the concept of the physical ‘thymos’ to characterize both. The thymos, you’ll recall, did the things we now take to be done by the brain and CNS; it was effectively the ‘mind’ and its various functions, and was literally thought to be a mixture of breath and blood located in the lungs (phrenes).
We also saw that based on this understanding of mind, Onians explained that learning was as literally “taking into the mind” and forgetting was literally “letting escape”. In addition, the state of a person’s thymos was thought to determine the “fierceness, energy and courage of a person” and the emotions were physical events or things that “enter into” the thymos as a liquid enters a cup.
Finally, let’s recall that we said that for Iladic people, perception or cognition was automatically associated with an emotion, and immediately followed by some degree of a tendency to action. By contrast, we today, and even Greeks of the classical era, exhibit the ability to seemingly “think in cold blood”. We’ve attained more discrimination about what’s going on in our minds, we’ve identified and defined various aspects and phases of mental activity rather than understanding mental activity as all of a piece.
To our credit, over the centuries we’ve managed to use language and abstract thinking, as well as philosophical and scientific examination, to slice and dice what our bodies do when we think and emote, and we’ve clearly become “outwardly more restrained” and even “inwardly calmer” in our actions than the Iladics are represented to have been. Much of this is to the good. Yet at the core of our advancement was a turning away from the core premise that all human mental life is physically based.
Quite some time ago we began forgetting, ignoring, or rejecting the basic starting point that emotions and thinking were coming from the same place, and in our efforts to locate more exactly what was the source of our mental lives, we made emoting and thinking functions of different parts of our anatomy, while at the same time coming to think of these different parts of our anatomy as fundamentally different. And even though most people today working on issues in and around cognition do accept that all thinking and emotional activity is physically based, you may be surprised to find out that old biases have calcified and we’re left with a big mess. At the core of the mess, as Joan Wynn Reeves put it, is the typical modern psychological view that there are “sharp distinctions between thought and feeling”.
More on that in the future, now let’s meet Plato.
Plato, or The Source
My argument is that if you look at Plato, Aristotle and Lucretius with a charitable, reasonable eye to what they were trying to address in psychology with the information on physiology they had, we can uncover a conception of mind and emotion that rivals any we have available today. This “P-A-L” account shows us that while a visceral view such as that of the Iladic people is useful, strict adherence to such a view is simply not robust enough. The account also provides a foundation on which to build a theory robust enough to handle the actual complexity of the relationships between mind, thought, emotion and morality. Unfortunately, it wasn’t long after Plato and Aristotle that theories about the emotions started off on two quite debilitating forks from this promising path.
I spent much of my discussion of Homer and the Iladic people focusing on thymos because that is overwhelmingly the concept their psychology depends on. However, there were other concepts and terms used for ‘mind’. The most recognizable of them is ‘psyche’, which you’ll recognize as the root of the English word ‘psychology’. In Homer, by and large it refers to “life-soul”, usually identified with spinal fluid or seminal fluid, which the ancients though literally gave life to a being. Through the ages between Homer and Plato the concept of thymos evolved and changed and distinctions were made that moved the “psyche” from this sort of spinal-seminal fluid to the immortal soul and the “seat of rationality”. For example, the poet Pindar (or II) is said to have developed the meaning of psyche into something “divine” and in some sense “concerned in the feelings of ordinary waking life” but at the same time “asleep when the limbs are active”. Plato, while he accepts the basic Iladic position that thinking and emotions come from the same physical system, significantly develops all of these concepts.
One thing I want to point out that is consistently overlooked is that Plato thinks the physicality of cognition is invaluable. People point to his theology (II) and metaphysics and overstate Plato’s wish for dissolution of the bonds between mind and body. As far as his psychology is concerned, it’s simply not important. We’ll see that what is crucially important is his creation of the conceptual space, the theoretical framework, for excluding some mental activity, sometimes, from the intrusive, inevitable and even overwhelming forces acting in and on the human body.
The Basics on Plato’s Adjustments
Plato starts from the view that in early childhood development (II), we are all like the Iladic people: everything takes a back seat to our immediate desires and our actions are based on the immediate information we have available. Our body is the conduit of information about both internal physical states (e.g. grumbling stomach, pain in leg) and external events that cause changes in our internal physical states (e.g. being hit by an object, a parent’s voice). Our responses to these states are limited to hardwired reactions. We slowly move beyond inborn or built-in responses to these states up to basic intelligence through experience and increasing body control.
Plato notes that we only perceive a limited amount of the information given us; some thing, some mechanism, filters the constant flow of stimuli. Its hard to overstate the importance of this move by Plato. It allows for a psychology that can distinguish between the center of registration and the center of perception. The center of registration is effectively the living body of any being and the center of perception, of consciousness, is a living body with a working psyche. The center of registration is the more basic system, it underlies all thinking and self consciousness.
After making this crucial move, Plato realized that if we could determine how the living body of a being registers stimuli, it would go a long way in understanding how the more intelligent system, the perceptive consciousness of a human, works, because they are causally connected. As I’ll highlight as we go along, this realization by Plato is of the utmost importance and the failure of later thinkers to make it is the cause of many problems for later theories of the emotions.
I’ll wrap it up for this post by noting that we only get more abstract thinking ability if we are properly educated. But once we begin learning to use abstract concepts we begin to develop judgment and our actions go from being more or less predictable or determined reactions, like an animal’s, to being actually willful (chosen, intended) acts.