Immanuel Can wrote: ↑Wed May 29, 2019 1:57 pm
So is the consciousness necessary to the activation of the reflex, or does the reflex produce the consciousness? It looks like the former is more plausible. But if all we are is physiology, it should be the other way round...we just don't know.
But if all we are is physiology, it should be the other way round? Why? Sleep is physiological and so is breathing. Just a non sequitur I think. A "reflex" is usually defined so that no conscious action is required. It is an autonomous sensor to motor response that occurs without the need to route to the brain. At least that is my understanding. So consciousness is not playing in a reflex at all. What are you thinking?
How do we decide whether or not the mind persists beyond death?
Well, remember we need evidence to believe that something is happening. And while the absence of evidence is not strictly evidence for absence it is usual to leave out all those things the "could" abstractly be and focus on what can be established on factual evidence. Given the fact that the slight chemical disruption you suffered under anesthesia caused a loss of consciousness, don't you think a complete rotting of your brain might also? It is possible for life to continue but we have no evidence of it. And as one of my teachers pointed out by asking "How do you know when you are dead?" if in fact we do, we aren't - dead that is. So you are really asking whether death occurs. Given the evidence of anesthesia, the fact that we know our consciousness can cease, and the fact that it requires some reason to posit the existence of something, I think we have no need to posit the existence of life after death. If it does exist we could be in trouble as our sensation of external events are physical and will cease and we could be left completely isolated in sensory deprivation. We might not even have the dark to comfort us.
Of course, we have those "back to life" anecdotes from people who have had visions, but surely those are not very strong data for us. On the other hand, we have absolutely no way to show that they are not genuine.
We have know way of knowing a lot of things are not genuine. But there is a lot of evidence suggesting that they are not and we have no hard evidence that they are so again, it requires evidence that stands up in a certain way to investigation for a claim to be considered factual.
Two things: we're not "introducing" anything, if it needs to be part of a complete explanation. But secondly, there is no axiom to the effect that having fewer "posits" is a good thing. As I was suggesting before, it's quite possible to have explanations with far too few posits. For example, I could "explain" water as consisting of merely hydrogen, instead of H2O. I would have fewer posits, but a bad explanation. So the number of posits is actually irrelevant to the value of the explanation. What needs to be shown is that the "oxygen" is not a necessary part of explaining the constitution of water...and then the "hydrogen" explanation would be superior. But not until then.
Ok, let's think this through. We could posit that water is a form of hydrogen. When we perform electrolosis on the water we obtain two test tubes of gases which we presume are both hydrogen. Isolating the gases we find that paper will not burn in one gas but will in another. So the hypothesis fails and we posit a second gas is involved, then work out the molecular weight etc and find its place in the periodic table. So there are facts that lead to believing that water is made of oxygen as well as hydrogen and those facts are usually demonstrated, not just explained, but demonstrated to most high school chemistry students.
Now, the point here is that evidence like that is absent in a no-ghost/no-zombie world.
You must remember that we are assuming no-ghost/no-zombie is true because we can't seem to reliably produce ghosts or zombies. We can reliably produce oxygen and we can reliably produce children by producing their bodies. I think if you could reliably show that there were ghosts, or zombies you would get a Nobel. But we can't, so your water analogy is false.
Do you think there are ghosts or zombies? Are you agnostic on the issue? If so, let's set it aside and ask first whether *if* there were no ghosts and no zombies, that would mean that there would be no need for two separate entites. So do you agree that *if* that were true, and there were no ghosts or zombies, that it would be possible to posit that brains are conscious, and based on that posit explain all the facts. Remember we are not trying to prove that brains are all that is. Only that by introducing the posit that brains are conscious, that no other posit is needed to explain all the facts.
We have no way to say that "materials" or "physicalities" are the complete explanation of the human entity.
Remember we are not trying to explain that material human entities experience we are trying to add a posit to material science - that matter, properly assembled will experience. Once we add the posit, then we can explain why having a child causes experiencing and executing a convict removes one. But you need the posit. I am not saying you can derive from current physics even on principle, that experiencing will occur. No matter what the device, if it only does what the current physics says matter can do, then it is not going to experience. The current physics predicts zombies. That is why it needs to be fixed. David Chalmers championed this view.
Be we are not saying that in addition to those posits that another type of entity, a mind, is required to be the one that experiences. We are saying that it could be that the matter itself so assembled experiences.
We can't just blithely assume it, because it allows us only one posit, and especially not when such an explanation appears to do obvious violence to phenomena upon which we all depend even to have the discussion, like "identity," and "mind."
This is just wrong. It's more non sequitor. If we assume that brains experience then we can have all the conversations you are implying we cannot have. There is no violence done to any phenomena because experiencing is accounted for. For example I could say that that brain is experiencing the validity of the Pythagorean theorem. Or that brain is experiencing its identity as a Catalan patriot.
It allows only one posit because it requires only one posit. Can you show even one phenomena that could not occur in a brain capable of experiencing?
Justintruth wrote: ↑Wed May 29, 2019 12:50 pm
Whether is its controversial is irrelevant.
Immanuel Can wrote: ↑Wed May 29, 2019 1:57 pm
Oh, I think not. It's true that truth isn't an opinion poll. But when a phenomenon is truly universal, and is so general that people are able to deny it only by departing from ordinary language use and normal assumptions, I think it merits our attention. And I think a good explanation should answer the concerns, not merely deny they exist.
Merits our attention? Perhaps. But once given we can see it does not merit credence because it is not based on fact. There is no denial of fact in what I am saying. All the facts are accounted for. Name one that isn't. There are plenty of instances where normal assumptions are proven to be false. The earth for example is round. In fact the current universe may be round. You can't base a claim based on it's popularity or the fact that it can be expressed in ordinary language. The opposite of your claim can also be expressed in ordinary language: "That man over there sees" expresses by my pointing at a body that it is that body over there that is the person. Most people will object to the destruction of their bodies and will save their brains by abandoning an arm. So your argument is not only fallacious in that it is a non sequitor, but even if I subscribe to the argument most people can be show to act in a way that suports the argument that their bodies are them. If I ask everyone one in a room to point to themselves and then ask them to point to someone who is not themselves watch what happens!
If materials can experience, think etc....We have to presume they cannot. We can see that mere materials cannot. If they could, then rocks could think.
Another repeated straw-man and a non sequitur. No, I do not think that rocks are conscious. No, the fact that they are not conscious does not mean that the matter in them could not, in principle be broken down and reassembled as a functioning brain and then it would be conscious.
Justintruth wrote: ↑Wed May 29, 2019 12:50 pm
But go look in a mirror. Why do you think this primate is staring back at you.
What? You do see a primate when you look in the mirror?!!! What do you see? A zebra? Look at your ears and nose and mouth man! You are a homo sapien sapien as they classify you. Go to a zoo for God's sake and look at the similarities with gorillas, chimps etc. Check the fossil evidence that other primate species once lived. You need to get situated in the facts.
But even were it a "primate" looking back, that would not solve the problem: for "primates" have consciousness. For your objection to work, I would have to look in the mirror and see something non-sentient, like a rock.
Another straw-man! Do you really think that my position is that there is something non-sentience about matter? That I do not see what sees, but rather I see what does not see?
I am merely saying that what you are looking at in a mirror is light reflected off of the body back to the eyes over the optic nerve to the back of the head and into the brain where the seeing by the brain occurs! I am not saying that there is no seeing happening!
Ok, I have now told you that many times I think I will call that "Mistake 1" and from now on just say that whenever you make it.
But then, "I" couldn't "see" it at all, or "recognize" it, if I did.
Mistake 1
See how quickly we need the language of mind to return?
Mistake 1
The thing "ghosts" and "zombies" have in common is having one dimension without the other. But they're not a concern here, because of two things: firstly, they're fictive, of course
Fictive. Hmmm. Just a moment ago you were saying that possibly a ghost is the what survives death. I am merely saying that if in fact there are none then it looks like we need only assume that matter can experience and develop the details of what states in the brain are associated (will leave off "cause" for you) with which types of experiencing. But I do agree there is no evidence that they are not fictive.
Justintruth wrote: ↑Wed May 29, 2019 12:50 pm
The POINT is that matter can experience so experience is not dismissed.
I think that's obviously untrue. You would need some kind of panspiritism or panpsychism to believe that, and that's surely harder to show empirically than is the existence of mind.
You don't need panpsychism if it requires a certain type of assembly. Those assemblies not in the right class are not aware. Therefore no panpsychism required. Another non sequitur. I would say "Mistake 1" as it is but it takes a little to see why.
Well, in truth, that (assembly) really not an answer. I can "assemble" as huge an complex a pile of inert materials (rocks, molecules, whatever) as I want, and there will be no consciousness there. Moreover, they may be "collected together" by random forces,
Mistake 1
Remember that whenever someone has a child they are "assembling a pile" of molecules. All of the matter that went into your mom and dad making you came from food that they and you ate. And that food came from photosynthesis - from the material in the air and food the plants eat. Sure we need a little more like water and oxygen and vitamins but again, all inert rocks. And they are in fact assembled ... into you for example!
...but to "assemble" them will take my intelligence being involved. There again, "mind" leaps back into the situation.
Check out Dan Dennet on this. He is a terrible philosopher but he has it right on "design" and "evolution". Evolution, without a mind, has been conclusively shown to be able to cause entities that are equivalent in function - sometimes better than - designed. Right now they are building a bridge in Holland that will be both designed and buit automatically by and algorithm that, presumably, is not aware.
They have done experiments on evolving algorithms and even got nocturnal species developing because they went home and left the light out.
Our bodies are a result of evolution.
Let's call this Mistake 2 - that complex competent function requires a designer.
Complexity is certainly necessary: but it is not sufficient.
Yes. So? I am not claiming that all complex assemblies are conscious. Just a subset. Mistake 1
As for "assembly," it requires design. A pile of molecules is not per se "assembled" into anything but a pile. So now your explanation would be tacitly importing intelligence and design into the description. Would you be content with that?
Mistake 2
If this is your basic supposition, we need proof for it.
Let's call this mistake 3, that you need to prove your assumptions.
So how does it actually come about that some, no matter how compiled or complex, does not, and some does?
Because the arrangements are different. The devices that are not conscious are not the same as those that are. If there were one instance of a set of identical assemblies, and one was conscious and the other was not, then we would have a zombie case which we are excluding by assumption.
It looks like some has "design" and "assembly," but some does not. And those terms require "plan" and "design," which themselves require intelligence, which is the thing we're trying to explain...so the whole thing turns badly circular.
Mistake 2