SteveKlinko wrote: ↑February 21st, 2022, 10:03 amNext, I would like to talk about the Computational Theory Of Mind (CTM) with respect to Conscious Experience. This is also called Computationalism. The basic premise here is that Computations are the basis for Consciousness, and therefore the Brain and Computers are Conscious merely because they both do their own kinds of Computations. But what is the chain of Logic that gets you from Computations to something like the Experience of Redness or the Salty Taste? The Theory is Incoherent without an answer to that question. There is no way this theory can Explain what the IM is within the theory. Again, I must ask please, will someone show me how this theory can Explain any Conscious Experience?https://medium.com/curious/the-enduring ... c46d3e0db1
The hard problem, Chalmers and many others claim, arises because the subjective conscious experiences, qualia as some call these, are irreducible. An experience is more than the sum of its parts. It goes beyond function and reporting. Since, as Nagel pointed out, it is restricted to subjective or first person experience, it cannot comprehensively be studied or explored using the third person or objective analysis that is demanded by at least traditional science methodologies.
This understanding of consciousness seems to have generated two responses. First, is the recognition by many that the existence of consciousness undermines the physicalist belief system. It seems to have triggered a sort of sustained attack on physicalism coming from a number of philosophical and scientific luminaries (physicalist defenders might, however, see them as cranks rather than luminaries).
On the other hand, it seems to have triggered an almost frenetic burst of consciousness research focused on neuroscience. This has resulted in major progress in identifying brain activity associated with conscious experience. Progress in identifying the neural correlates of consciousness (NCC), initially with Francis Crick and Christof Koch, has led to one of the two favored quasi-physicalist explanations of consciousness, the Integrated Information Theory (IIT) of Giulio Tononi and Koch. The other leading science-based idea developed by Bernard Baars and Stanislas Dehaene is called the Global Neural Workspace Theory (GNWT).
Who is right? At heart is the age-old mind-brain problem. Physicalist defenders, including those engaged in ground-breaking neuroscience claim that the strong advances in mapping brain activity to experience and the massive effort aimed at it are very close to revealing the physical nature of consciousness. The hard problem will then become just another easy one.
But, is this another example of “promissory materialism” in Sir Karl Popper’s term? Brian Greene is a foremost apologist for physicalism. Until the End of Time is perhaps the best current example of how committed physicalists defend this belief system and attempt (vainly in my view) to avoid the nihilism that many see is necessitated by this belief. Greene’s comment on the state of consciousness studies is a prime example of the still unkept promise of physicalism on this topic:
“I suspect that consciousness is less mysterious than it feels…I anticipate that we will one day explain consciousness with nothing more than a conventional understanding of the particles constituting matter and the physical laws that govern them.”
Perhaps, but it seems that those studying this hard problem are a bit overeager to claim that the proof is at hand. Christof Koch is one example. The neural correlates of consciousness studied initially with Francis Crick show brain activity associated with subjective experience. Some have claimed that this showed the brain generated this conscious experience. David Chalmers refutes this in The Character of Consciousness ...
... The Global Workspace Theory or Global Neural Workspace Theory seems to correspond to the computation theory of the mind, or CTM. Koch has strongly criticized CTM including in the subtitle of his book on consciousness: The Feeling of Life Itself: Why Consciousness is Widespread But Can’t Be Computed.
The theory may be very helpful in understanding the operations of cells in the brain related to consciousness but does not explain how the brain produces consciousness. The initiator of this idea is Bernard Baars, but he does not equate correlation with causation:
“Baars (1997) suggests that the global workspace ‘is closely related to conscious experience, though not identical to it.’”
I rather like IIT and take its panpsychic implications more seriously than committed materialists. The issue IMO is putting consciousness on a pedestal. For instance, based on the idea that relations and integration bring about consciousness, then the universe, galaxy, stars and planets are conscious to varying extents, as are cities and towns, ecosystems. Each reacts and responds, with varying and variable integration.
So, for me, the issue is not so much what is conscious, because I see myself as existing amongst all kinds of consciousnesses. Rather, it's about which instances of consciousness are significant as regards human-like consciousness, which appears to be restricted to animals in varying degrees.
It seems to me that we live in a young universe. Our impression at this stage is that evolution leads to this final, advanced state - human consciousness. However, early in the Earth's history, digestion was the most advanced process. The job of early nervous systems was only to protect metabolic organs. In time, the nerves bundled up into brains - a central organiser of signals pouring in via the senses. Still, if simple organisms could philosophise, they would say, "I eat, therefore I am".
At some point in evolutionary history, seemingly related to sexual reproduction, ever more complex brains usurped metabolisms as the primary body system. In the past, the job of brains was just to protect the metabolism. Now, the job of the metabolism is to feed brains. "I think therefore I am".
So we arrive at human consciousness, augmented by increasingly intelligent machines. I do not think this kind of consciousness is the end of matter's journey to ever greater awareness. It may be no more an end point than digestion was.