PIT2 said:
Sorry to introduce the pope again, but he probably can imagine lots of things. For him, there may not exist any problems about the way reality works. God simply did all of it. The pope might well say that anyone who thinks there are problems with producing a theory of everything is wrong. There are no problems, and we will all find out that god is the answer.
Sure, that’s the simplest solution to everything isn’t it – God. That premise answers all questions. But then why do philosophy at all? What would be the point, if everything is answered by God?
The “God is the answer” solution is similar to the “solipsism is the answer” solution – neither can be logically falsified. One must simply assume their truth or falsity.
Canute said:
Can we agree that solipsism is unfalsifiable?
Only if we have good reason for believing it is unfalsifiable (if we don’t, it simply becomes an assumption – and I see no reason to simply assume it is true). I’ve presented an argument that is based on analytic truth. Would you agree with that argument?
Canute said:
If so then it is impossible to demonstrate that consciousness has a materialist explanation even if it does have one. I'm not sure why so many researchers ignore this problem.
Solipsism is always a possible answer to everything – just like PIT2’s suggestion that God is an answer to everything. If one wishes to believe either of these is true, then for the life of me I can’t understand why one would want to study philosophy?
As I keep saying, but it seems like the message doesn’t get through,
one cannot make any progress in explanation or understanding unless one first makes assumptions.
Assumption 1 : Is solipsism true? If you assume “yes”, then do not pass GO, do not collect £200. (What’s the point of philosophising any further about a world which is entirely in your imagination?)
Asumption 2 : Is God the answer to everything? If you assume “yes”, then do not pass GO, do not collect £200. (What’s the point of philosophising any further about a world which is explained totally by the premise of God?)
If you answer “no” to both of the above, then you are assuming that solipsism is false, and you are also assuming that God is not the answer to everything, and it then makes sense to proceed further and ask more philosophical questions.
Canute said:
I agree, of course, that questions like the one we are discussing cannot be decided by a show of hands. However, the fact that there is so much opposition to the view you are supporting does at least show that there is as yet no convincing evidence that is correct.
No, it simply shows that some people have entrenched beliefs and intuitions that they find very hard to let go of, even in the face of convincing evidence. Since PIT2 brought up the subject of the Pope - I am sure that the Catholic Church at the time of Galileo would have taken a similar line to your own on the subject of the heliocentric model of the solar system – they would also presumably have said “there is no convincing evidence that the heliocentric model is correct” – and they would have done this by simply referring to the bible and the edicts of the Church (these after all were the only evidence they needed), and by ignoring the scientific evidence. They were wrong, weren’t they?
What kind of “convincing evidence” does it take? I have stated already that Metzinger’s account fits the facts – can you show that it does not? Can you show that Metzinger’s account is somehow deficient or incorrect or wrong? If you cannot, then how can you claim that Metzinger’s account is not an acceptable hypothesis for the emergence of consciousness? Simply referring all the time to “the views and opinions of other people” is similar to the Catholic Church’s insistence on referring to the bible and their own edicts and ignoring the empirical evidence of the time – it is not a logical, philosophical or scientifically sound argument.
The point I am trying to make is that one cannot settle these issues by “popular vote” or by “show of hands”, or by “so much opposition to your view” – this is neither good philosophy nor good science. One can settle these issues only by rationally and logically examining the evidence. Now, on what rational or logical basis do you reject Metzinger’s account of consciousness (which account imho denies the existence of a “hard problem”)?
Canute said:
It is over ten years since Chalmers christened the 'hard' problem and nothing has changed in the meantime.
Christening a problem does not make it a problem. I can invent any number of Hornswoggle problems, but my doing so does not mean that these so-called problems are real problems. Certainly one can delude oneself into thinking nothing has changed if one is blind to those changes. Have you studied Metzinger’s paper? I’m pretty sure the Catholic Church would also have said that the Erath was the centre of the universe and nothing had changed in the 4,000 years since creation – were they right simply because they were deliberately blind to the truth?
selfAdjoint said:
Just exactly what I was talking about in the previous post. You can't imagine it, but others can. There's no force in the statement "I can't imagine that."
I agree with selfAdjoint here 101%. Inability to imagine a solution which others
can imagine does not constitute a logical, philosophical or scientifically sound argument against that solution. I personally find it very hard to imagine the curvature of 3D space, but I accept that it makes sense to talk of spacetime curvature in higher dimensions (though I know that some philosophers, eg Norman Swartz, deny that such curvature has any reality for precisely the reason, imho, that he cannot imagine it).
Imagine that we could build a machine which could accumulate input data from the world, then process this data according to various internal “world models” it has about its environment. The machine has visual (colour-sensitive) receptors, it has audio receptors, it has tactile receptors, and it can assimilate all of the data from these receptors into an internalized self-consistent model of it and its environment. The machine is also able to understand the rudiments of the syntax and semantics of the English language, it can converse in English, and is able to provide reports on the information it has received and internally processed. We show the machine a red object, and we ask the machine “what is it like?”
The machine can certainly “see” the red object, it can process the visual data from the red object in terms of its existing internalized model of the world, comparing the data with other stored data from seeing many other objects in the past.
What would we expect the machine to reply? The machine certainly would not rely “its like nothing at all” – because the phenomenal experience of seeing a red object is a definite phenomenal experience for the machine. But what exactly is it like from that machine’s perspective? How could the machine possibly tell us?
Why would the machine’s answer be any different (in principle) to the answer from a conscious human being? The machine “knows internally” (ie knows to itself) what it is like when it sees that red object, but how can it describe to someone else “what it is like” when the machine sees a red object? The question “what is it like” in this context is meaningless.
This (in a nutshell) is supposed to be the “hard problem”. But what problem? The precise subjective phenomenal experience of agent X seeing red is
unique to agent X – just like a random real number is unique. The only way you can know “what it is like for moving finger to see red” is if you ARE moving finger. But you AREN’T moving finger, therefore the issue is irrelevant. The question has meaning ONLY if the questioner already knows (from subjective experience) what it is like (for the questioner) to see such an object,
and makes the assumption that the agent’s perceptual experience of red is somehow similar to the questioner’s. Otherwise, the question is meaningless. THIS is why the hard problem is a non-problem.
selfAdjoint said:
Well as to logical coherence, any logical argument has to rest on specific clear premises. Then you do logical algebra on these premises to come up with conclusions. And the accusation of incoherence is that your conclusions don't in fact follow from your premises, or else that your premises somehow contradict each other.
From a logical point of view what you have described seems (to me) to be logical validity, rather than coherence. If the premises of a logical argument are true, and the inferences valid, then the argument is sound. To me, “coherency” does not apply to arguments, it applies to concepts. A concept is coherent (to me) if it can be grounded in a rational and self-consistent description or explanation of “how it works”, which is in turn grounded in a rational and self-consistent concept of how the rest of the world works. (Thus I believe that the libertarian notion of free will is incoherent because the concept cannot be grounded in a self-consistent description or explanation of “how it works”.)
Thus it seems (imho) to boil down to whether Canute is claiming that there is something wrong with either the premises or the inferences in the “argument” that functional processes giving rise to phenomenal consciousness, or whether there is something irrational or inconsistent in the “concept” that functional processes giving rise to phenomenal consciousness. I’m not sure which one Canute is arguing against.
But simply saying “I don’t believe it, therefore it’s incoherent” is neither a rational nor a logical argument.
selfAdjoint said:
Now as far as physical processes producing consciousness, what I see is that partisans of the hard problem have constructed a straw-man theory they call physicalism, which they can show to be inconsistent in this way. But the opponents of the hard problem deny that that physicalism is a correct picture of their beliefs, because they say it includes premises that are plausible to the partisans but not to the opponents.
If you want to discuss this issue, maybe we could start a thread; I don't think it was ever adequately discussed on any of the old threads I remember.
Sounds like a good idea. I’m especially interested in the notion that physicalism does not answer the “hard problem” –
selfAdjoint if physicalism is not the answer then what (in your opinion) is? Functionalism?
Paul Martin said:
Since I believe there is a Hard Problem, I would characterize physicalism as a belief that the early (pre-life) evolution of the physical universe did not involve conscious action. Is this a fair characterization in your opinion? Or is it incorrectly described?
Imho physicalism does not entail that consciousness supervenes on evolved life-forms. I believe physicalism is silent on the precise ways in which consciousness may manifest itself, apart from saying that everything is physical.
Paul Martin said:
After a rather long discussion with MF on the question of the Hard Problem, and after having read Johathan Shear's compilation of rebuttals and comments on David Chalmers' "The Conscious Mind", I am convinced that there will be precious few conversions in either direction on the issue for a while. Since it will be pretty hard to prove who's right one way or the other, we may have to wait a while before the debate is settled. It should be fun to watch anyway.
Surely this forum is a place for making things happen, rather than for being spectators and waiting for others to make things happen?
Best Regards