Lifesaver,
Thanks for your reply, and for bearing with me. I've read some philosophy but am not familliar with all of the language so it must be a bit tiresome to be dealing with such basic questions.
That's no problem at all. I believe good philosophy ought to be simple enough that any person will be able to understand if they make a little effort and receive an explanation of the technical terms.
So, if some concepts seem cloudy and some steps of the arguments are unclear, that is rather my own fault.
Self-contradictory, or contradicted by observation?
Frankly, I can't see problems with either. Can you demonstrate a clear problem rather than relying on ignorance (e.g.: "how can our minds arise from physical materials")?
Yes.
I will briefly outline two problems with a materialist worldview.
The first is an objection only to the most radical materialism: that which asserts that the mind IS the brain (or some body of any kind).
It is the problem of the irreducibility of mental acts (thoughts, experiences) to brain states (actual phyisical phenomena that takes place in the brain).
This problem assumes something which is already a great concession to materialism: that each and every every particular mental act has a perfectly correlated brain state.
When you think of a red ball, one or some mental acts take place. At the same time your brain state changes (neurons make their synapses or whatever).
Now, if someone holds that the mental acts are physical phenomena, then your thought is actually the neurons and electrical signals taking place in your brain.
But it is obvious that there is no red ball inside your brain at the moment.
An observer who watched your changing brain states as you thought of the red ball would still have no access to your actual experience of the red ball.
They could possibly take note of the synapses which took place and then conclude that you thought of a red ball; but the actual experience the red ball is nowhere to be seen; it is not itself physical.
It may be, as our example supposed, that mental acts and brain states carry the same exact information. But even if that is the case, they are absolutely different languages (much like the images on the computer screen and the actual processes which go on in the CPU when the image is shown).
One may be the direct product of the other (mental acts are the effect of the brain states), but they cannot possibly be the same thing, as they have a manifest difference. And one and the same thing cannot be different from itself in any way.
The second objection to materialism is broader: it refutes the position which affirms that the mind, or the thoughts, are a product of the brain or of some other physical phenomenon.
Just like saliva glands produce saliva, it is held that the brain and its physical processes produce thoughts.
If that were the case, it would be impossible to speak of true or false thoughts and opinions. Afterall, just as there can be no true or false saliva (only different kinds), there can be no true or false thoughts (only different thoughts, which are the effect of different physical conditions). They are merely the product of the material conditions of the body. The notion of truth and falsity become meaningless concepts.
Thus, anyone who accepts this version of materialism ought to accept that it makes no sense to speak of "true" or "false" thoughts, opinions, descriptions, etc. Thoughts are only the product of the brain; they do not make any reference to the object of the thought.
If it doesn't make sense to speak of "true" and "false" positions, then it doesn't make sense to defend materialism as being true. Materialism, like every other philosophy, is the outcome of certain bodies being affected in a certain way.
It doesn't make sense to think of materialism as being in any way a philosophy superior to any other (why is bodily state A better than B?).
Therefore everyone who thinks materialism to be a better position ought to accept that it is as irrelevant and "equally valid" as all others.
How would you respond to an extensive and growing body of research which shows extensive mental and personality changes that arise from changes to the body. To my knowledge, there are no fixed and immutable properties of our mind and personality which can not be affected by the body.
I would say such research enlarges our knowledge of the many ways in which body and soul interact.
This kind of knowledge is only a problem if one believes in a Platonic/Cartesian soul (the transparent ghost trapped in the body, or the unextended thinking substance which controls a body absolutely separate from it). Since these traditions of thought posit an absolute separation between soul and body, it is hard for them to acknowledge that the body may affect the soul in a number of ways.
The soul's activities are dependent on the body.
We can only see if we have eyes; we can only digest if we have a stomach.
The soul is the principle of life; that which differentiates the living being from dead matter.
What is the difference between a simple bacteria and a non-living organic complex? The activity of the bacteria's components are all ordered toward the same end: the preservation of its life and the survival of the species.
It is the ordering principle behind this ordered activity which is the soul. Of course, if the body were to be destroyed, so would the activity of this soul. And since all its activity consists precisely of this, then the soul itself, in the case of the bacteria, ceases to exist as the bacteria dies.
The same holds true for plants and animals, whose souls have many more functions (growth, senses, self-movement, memory, etc), but all of them necessarily dependent of physical organs.
In the case of man our soul has activities which, despite being dependent on the body in this life, are not necessarily dependent on it: abstract thought.
We only think with what we have experienced, based on our memory, with objects of past experience. So we do need the body to think in this life; but the actual activity of abstract thought, of reasoning, does not depend by necessity on any physical component, and that is why the soul of man does not disapear with his death.
Rather, it retains its activity, though in this state of separation (which for man is unnatural) knowledge will be acquired in a completely different way.
To be clear, this is your definition of "objective morality"? It doesn't seem to say anything about morality which confuses me. You also don't make any claims about objectivity which would seem to be essential. I don't accept objective morality, as I understand it. My understanding is that objective morality would be a moral belief which we may either derive by observation, or which must be shared by all people regardless of culture, age, or upbringing. I don't think such a thing exists.
By objective morality I mean that man, using his reason, is able to discern principles that ought to guide his action if he wants to be happy and wants to help others achieving happiness as well.
The application of these principles will in different circumstances lead to different actions, and it is impossible to draw a priori a perfect set of practical rules which tell us how to act in every case. Only our own experience, which develops our practical reason, and the example of those who are more virtuous than us, will help us learn how to act more correctly in every situation.
In short, it is impossible to know how to act independently of the concrete situations we are faced with, but at the same time it is not "anything goes"; there is such a thing as right and wrong action, and a man may reach that knowledge using his rational capacities.
To shortcut the discussion, let me try to pick one of the clearer examples in QM, that of entangled particles. An observation in one, immediately determines properties of the other regardless of distance. This means that entangled particles exhibit "non locality". Because of properties of time, different observers may not be able to agree on which particle was observed first and so there is no way to determine the cause and the effect.
It may be that certain things have "random" movements in the sense that whether it goes left or right is up to pure chance.
However, such phenomena are in no way uncaused. On the contrary, they have a series of conditions which must exist for them to take place, even though it is impossible to predict what the outcome will be. We need particles to exist with their nature, to be in a certain position, etc.
Are you defining "order", or are you observing a property of "order"?
I am observing it. Observing facts which happen in an intelligible way.
Note that these physical laws are not intelligent, unlike your earlier claim. You had said that order arises from an "intelligent will" and now you're saying that they don't need to arise from an intelligent will, but rather a system of physical rules is adequate.
What I meant is that a particular observed order in the events of the universe needn't be the direct result of someone's willing it. It may be the secondary effect of such a will; that is, it may be that the whole universe is ordered by one principle which is in fact willed and the rest of our observed laws of nature actually follow from this one.