Les Sleeth said:
I'm afraid I can't see why you don't think improper definitions aren't a problem in a debate. You say, "Anything non-physical would have to behave in a contracausal manner by my definition. That is the purpose of definitions." Do you think you get to make up the rules of reality?
We do get to fuss with words somewhat when it really isn't entirely clear what they mean (if it were, we would not be having this discussion). For instance, it was once thought that breath was non-physical, that the properties of life were non-physical, that the propagation of light waves was non-physical. We gradually had to include these under the umbrella of physicalism when two things were realized. One thing was that they behaved mechanically. Another was that they were composed of matter (or in the case of light, energy quanta). So the question becomes: Which of these considerations is
the reason they came to be considered physical? And correspondingly, what exactly does it mean for something to be physical?
We clearly have two options, and which you choose likely depends on what view of physicalism you take. You can take the view that only matter/energy can be considered physical, which is the view you seem to be taking. I'll explain why I don't share that view. It begins with the ontology of energy as physical stuff. Consider how it is defined: the capacity to perform work. This is a vague definition that fails to take into account the fact that certain massless particles, that do seem to be material of some sort and not simply a property of other material, are nothing more than energy quanta (string theory would hold that they are exactly the
same material as matter, only with different vibrational signatures). The question we are faced with now is the same one I just asked: Given that energy and matter seem to be interchangeable manifestations of the same "stuff," is it this "stuff" that is to be considered physical? Are the physical facts nothing more than facts about relational properties between matter/energy "stuff?" You seem to think that they are.
There is another way of looking at it, though. Even before energy was known to be the same "stuff" as matter, it was still held to be a physical phenomenon. I ask why that was? My answer was that it was a mechanical property of matter and so figured into the mechanics of physical theory. Theory-physicalism, or t-physicalism, holds simply that the physical facts are those that describe relational properties, period. I take this to mean that any thing that can have a causal relation to another thing is physical. I see your view of physicalism (all that is matter/energy is everything) as
matieralism. I will grant that many people, and even dictionaries, see the two as synonomous, but I'm trying my best to explain why I do not agree. I will elaborate below.
Remember, you are the one who's argument ended with "therefore, p-consciousness has a physical source." It makes no sense, as Fliption points out, to define everything as physicalness and then to state the obvious tautology that any particular thing is physical. If everything is defined as physical, then what else can anything be?
You're right. That doesn't make sense. It's also not what I did. I challenge you to find any instance of my defining everything as physicalness. I think I've been about as specific as a person could possibly be with definitions at this point, and it should be clear that I've defined "physical" to mean
anything that is bound by mechanical laws of cause and effect and "physicalism" to mean
the theory that states facts about causal relationships between objects are the only facts. It should be clear by now why this is. If a causal relationship behaves mechanically, then it can be described by mathematics (even if only probabilistically). If it can be described by mathematics, then it can be included into the study of physics. I think this is the most consistent definition of "physical" out there. Given this definition, I'm not even personally a physicalist, but I am at least investigating the possibility that consciousness is a phenomenon that can be explained by a physical theory (although I intuitively suspect it likely will not).
"I define physical as being anything that can be a cause or an effect . . ." Well, that's what everyone is debating about. That is, we are debating if something non-physical can cause physical effects. Once you define anything that causes as physical, then what is there to say about the real debate?
It says that for consciousness to behave in a way not describable by physical theory (and hence not be physical), it must be one of two things: It must either be contracausal, or it must be an intrinsic property of matter/energy "stuff" that is not a part of relational causality.
Your syllogism appeared to be attempting to prove consciousness must have a physical source, but I say you've failed to do that because your assumptions are not established fact, and because claiming everything is physical to begin with leads to an overall circlular argument. So in the end you leave us with an unsound and illogical proof.
You might question the soundness, but unless you disagree that the hypothetical syllogism and modus ponens are valid argument forms (you would be at odds with every single logician in the world if you did), you cannot question the logic. Anyway, all I was attempting to prove was what I stated in the paragraph above. Let me paraphrase myself:
For consciousness to be non-physical, it must either behave contracausally or be an intrinsic property of causally related agents that is not itself a relational attribute.
Right. So, there's a big hole in your argument right there.
Actually, let's examine this a bit. It isn't
strictly a hole in the argument, because the argument is really only meant to establish a hypothetical conditional, not any fact about reality. Nonetheless, I get the feeling that this might actually be a fairly fruitful way in which to approach a theory of consciousness that at least isn't covered isn't by any currently known physics. I've been thinking about your idea of the fundamental existent as a causative agent of energetic action rather than of material action (obviously, energy itself is the cause of material action). Even if we consider energy to be the same "stuff" as matter, because of the definition of work, a causative agent that only acts on energy actually wouldn't perform any work. Work is defined as force applied over a certain distance, and force is defined as mass multiplied by acceleration. It should be clear that, because energy has no mass, that no force, and hence no work, is needed to cause a change in its behavior. The question of whether or not the fundamental existent is a cause of energetic behavior in a mathematically describable manner is still relevant to the question of whether or not it is physical under my framework, but it is certainly not covered by any known theory of physics.
Now, there might some kind of initiating power other than energy (which, BTW, is a fourth way your argument can fail)l.
Actually, I don't see that as being a possibility. Because work is performed when a material action is initiated, energy must be required by the definition of energy. I think looking into the initiation of energetic action is indubitably the potentially fruitful avenue we've uncovered here. Thanks for the help.