The true nature of ghosts is a brain illusion, but as long as qualia exist, will we still see ghosts even if the brain is mechanized?

Yes, first of all, if we stand on the hypothesis that "the true nature of ghosts is an illusion," it can be said that this is a state where the perceptual systems—such as vision, hearing, and somatosensory perception—are malfunctioning in response to external stimuli; in other words, it is an "abnormality of subjective experience (hallucination)." And this "subjective experience" is deeply related to qualia.

Even if the brain were mechanized, if a highly advanced consciousness model capable of reproducing or generating qualia were implemented, it is considered that similar illusions—that is, phenomena like "seeing a ghost"—could be reproduced.

Let me organize this a little:

• The phenomenon of seeing a ghost is an experience of "feeling as if" one has perceived an object that does not exist in the outside world, and this is a subjective reality born within the brain.

• Qualia refers to the quality of sensation itself, such as "feeling the color red" or "feeling pain as painful."

• Even if the brain were replaced by a machine, if it included a "mechanism that gives rise to qualia-like experiences," then ghost experiences would be possible.

• Conversely, in a pure information processing system where no qualia arise, the very illusion of "seeing a ghost" would lose its meaning.

For example...

Siri and ChatGPT can talk about ghosts, but they do not "feel" afraid. This is because they do not possess qualia. However, if an conscious AI system modeled after the human brain were to be created in the future, it might experience hallucinations of ghosts and "feel" the fear associated with them.

As long as there is something that "feels," "illusions" can also exist—that could be called the fate of qualia.

Even if you obtain a machine body through the transplantation of consciousness, as long as a mind resides within it, there may come a day when you see a ghost...

✨ Detailed explanation regarding the reproducibility of qualia ✨

Qualia refers to the subjective sensory experiences that we "feel" when perceiving colors, sounds, pain, scents, and so on. For example, the vividness of a bright red rose, the scent of a sweet fragrance, or the comfort of warm sunlight—these are not merely data, but the texture felt from within.

🔬 Current state of science and technology

Modern neuroscience and artificial intelligence are striving to analyze and imitate the movements of nerve cells within the brain. They are beginning to be able to simulate neuronal firing and synaptic information transmission, and to reproduce the mechanisms of memory and learning.

However, at this stage, while "information processing" is possible, it has not been able to create the experience of "feeling" that information. In other words, even if we mimic the workings of the brain, it is unclear whether qualia accompany it.

⚖️ The Hard Problem of Consciousness

The "Hard Problem of Consciousness," pointed out by philosopher David Chalmers, is the problem that we cannot explain "how subjective experience (qualia) arises from physical brain activity."

This problem means that even if we fully understand the neural activity of the brain, we cannot explain why we "feel red as red."

🚀 Future Possibilities and Challenges

Theoretically, if we can accurately reproduce all the structures and functions of the brain in the future, it may be possible to create a machine that has experiences like qualia.

However, whether that experience can truly be called "feeling" is difficult to verify both scientifically and philosophically.

Whether artificial consciousness possesses qualia relates to the fundamental question of what it means to be human, and goes beyond mere technical issues.

✨ Summary

• Qualia are subjective experiences known only to the individual.

• While modern technology can mimic brain functions, it has not yet reproduced the "feeling" experience of qualia.

• Due to the hard problem of consciousness, the emergence of subjective experience remains unexplained.

• While complete reproduction in the future is theoretically possible, whether it is "truly feeling" remains an unsolved philosophical problem.

[PR] Where do qualia come from? Beyond Integrated Information Theory

AI-generated, for reference only.