The Mystery of Subjective Experience

Neuroscientist: Let’s look at the evidence. When we use an fMRI, we see that specific areas of the brain light up when you feel love, pain, or even religious awe. We can predict your choices seconds before you are aware of making them. If the soul is a separate substance, why is it so perfectly tethered to the chemical state of the brain? A drink of wine or a lack of sleep can change the very character of your "immaterial" soul.

Avicenna: You are confusing the instrument with the musician. If a lutanist plays a lute and the strings are out of tune, the music will be discordant. If the lute is broken, the music stops. Does this prove the music is the lute? No. It proves the musician requires a functional instrument to express harmony in the material world. The brain is the tool through which the Soul perceives this lower reality (al-dunya), but it is not the source of the Soul's light.

Neuroscientist: But your "musician" is a ghost we can't find. We have what we call the "Hard Problem." We can explain how the brain processes light and sound (the easy problems), but we can't explain why there is a feeling of what it's like to see blue. However, just because we haven't solved it yet doesn't mean we need a supernatural "musician." We see consciousness as an emergent property—like how "wetness" emerges from H2O molecules, even though a single molecule isn't wet.

Avicenna: "Wetness" is a quality of matter perceived by a mind. You cannot use a material metaphor to explain the very thing that perceives matter. The Soul is a simple, indivisible substance. Matter is always composite and divisible. How can that which has parts—the brain—produce that which has no parts—the "I"? It is like saying a thousand blind men, by standing together, can suddenly see.

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