Speakpigeon wrote:
The point is that we experience redness so it cannot possibly not exist as such, whereas we don't experience at all the possible correlates of redness in the physical world, say, electromagnetic frequencies and such, so in fact we don't even know they exist (as such).
Jeez. The trails you drag your across to say something that is different from what I am saying. There is the physical universe from which comes the energy to impinge on human sensors. Physically respondent sensors permit encoding of information to the nervous systems which processes it. What humans do with that information is use it to construct models of what is sensed that are purely information. I don't know how many times I've differentiated information from physical energy, yet you still confuse what I write with being outside your frame of reference which is classical mostly. Redness is something we believe.
I say redness is related to energy in the 500-650 nm wavelength range simply because the nervous system uses sensors sensitive to such which are transferred up to cortex in spatially and energy frequency linked channels just as acoustic information is transferred up the nervous system to cortex in frequency and arrival time related channels.
Stimulate receptors which respond to red wavelengths (physical scale) and to receptors which respond to orange wavelengths and you will find them very near physically to each other as their information is transmitted up the nervous system to cortex. Its the same type of representton as makes up the touch and vibration homunculus for light and sound. I really don't see how it's a tough problem at all.
If information is preserved IAC with physical stimulus in the NS it is reasonable to assume tht as one learns about the outside world one would develop connections between what is input and what one =experiences. Not hard at all. Yes redness is sense information , it is not not sense stimuli. However relations with the nature of sense stimuli are maintained throughout the sensory pathway and even to the language or experience regions of the brain. Redness is related to red signals IAC with the physical stimulus energy, particularly evident in vision.
Your wandering around trying to protect an imagined thing, quale, as other than the result of physical stimulus is far fetched. As we learn that consciousness is after the fact we learn that what we presumed made up consciousness is not as we once thought. Instead it is completely explained as making judgments about inputs base on their association with other inputs that are similar. No magic. No new dimension or phenomena, its just information organized as it physical information is related in nature.
My first failing was a a sensory scientist not explicitly and completely explaining something I presumed was understood by intelligent people.. My second failing was not making clear that I understand animals evolved developing senses respondent to information to they depend to survive. The nervous system is extremely organized when it comes to its relation with location, light, sound, scent, movement, etc. For failing to explicitly point out those items I apologize.
I hope you have enough information now to understand what I am saying and why I am saying it.
We are saying the same thing except I relate it to the physical reference by pointing out how the brain relative to how physical information is organized in sense input while you seem to require an entire new dimension to produce sense data (uh, information by any other name).