Michael

This is like asking why we accept the Standard Model if we cannot see electrons with the naked eye.

You seem to misunderstand my point. Dreams can be about things but dreams are still mental phenomena, caused by neural activity in the brain. So your ...

And colours are constituents of these experiences. This is a word game. You might not like to use the phrase "the schizophrenic hears voices" because ...

I see colours when I dream and hallucinate on mushrooms. I see white and gold when I look at the photo of the dress. I feel pain. The schizophrenic he...

I know. And colours, as ordinarily understood, are properties of the experience, not properties of what the experience is about. The naive colour real...

Nothing. Hallucinations, dreams, and non-hallucinatory waking experiences all involve neural activity in the visual cortex, producing colour percepts.

But the question under consideration isn't "what are all the ways that we use colour terms in our everyday lives?". Rather, we are using the word "col...

Nothing.

We can, and do, use the phrase "red part of the visible spectrum" to mean "620-750nm light". Pens do reflect 620-750nm light, and so we can, and do, s...

I understand what intentionality is. I don't understand what intentionality has to do with the discussion we're having. A book is about a person, but ...

I'm not sure what "aboutness" has to do with anything being discussed here. This history textbook is about Hitler, but it isn't Hitler; it's bound pie...

This is no longer a matter of philosophy. Science has solved the problem. All I am doing here is explaining what the science shows to those who persis...

That's not the sense of redness that is our ordinary, everyday conception of colour. Our ordinary, everyday conception of colour is that of the mental...

What do you mean by "information"? Are you referring to the chemical neurotransmitters like glutomate that are released and sent to the brain? They, t...

Let's take someone with congenital insensitivity to pain with anhidrosis. They don't feel pain but they can still be injured and can still be made awa...

Yes, that's what explains dreams, hallucinations, and variations in colour perception, as I have been arguing. Colours, as ordinarily understood, are ...

Good. Then the claim I have been making since the start of this discussion is that colours-as-mental-phenomena constitute our ordinary, everyday under...

I'm aware. That's the point. Claiming that the colour red is 700nm light is as mistaken as claiming that a sweet taste is sugar. Rather, eating sugar ...

I want to know if you accept the existence of colours-as-mental-phenomena.

I'm asking you if "experienced as red" means "experienced as emitting 700nm light" given that you defined "red" as "emitting 700nm light".

So when you say this: "check out the strawberries that are experienced as red, when they're really black and white" You are saying this: "check out th...

Do you mean a pixel that emits 700nm light? Perhaps, but there are no experiences without brain states, and I doubt the same brain state can produce d...

No, I mean sugar.

What's a red pixel? I wasn't talking about a correspondence between stimulus and experience. I was talking about a correspondence between brain states...

Correct, just as sugar is not taste.

Gross disconnect between what? What do you even mean by "really" black and white?

To the extent that one might want to argue for something like idealism or substance dualism or panpsychism, sure. So if that's how you want to defend ...

So you think that this quote from Vision Science: Photons to Phenomenology is unscientific? Or this from Neural representations of perceptual color ex...

Yes, that’s what neuroscience shows. Human consciousness does not extend beyond the brain. It certainly does not reach out beyond the body to contain ...

Do you deny that dreams and hallucinations have colour? Because they do. Do you believe that the colours in dreams and hallucinations “emerge” from bu...

It does, just as the nouns "colour" and "pain" do. It refers to those things that exist when we dream and hallucinate, that are caused to occur when w...

Do you understand what pain is? What smells and tastes are? Vision isn't special. I'm not concerned with the adjective "red". I'm concerned with the n...

Colour qua colour is the experience; colour isn't light, isn't how atoms reflect light, and isn't some third mind-independent thing that is neither li...

And some of those things, like colour and pain, aren't.

Because you keep asking the hard question. We don't have an answer to it. All I am explaining is what the science shows; that pain and colour are perc...

A percept that occurs when there is the appropriate neurological activity, often in response to electrical signals sent from nociceptors. See for exam...

So in other words it isn't known whether pain requires the appropriate neurological activity, and so it is possible that pain just ain't in the head? ...

What's so special about neurological activity that causes pain? This is the hard problem of consciousness that is yet to be solved.

No it doesn't. That colour experiences require neural connections ordinarily formed in response to electrical information from the eyes does not entai...

We're working on it. See a narrative review of cortical visual prosthesis systems: the latest progress and significance of nanotechnology for the futu...

Except when we say that the pen is red we are not (ordinarily) saying that the pen has a surface layer of atoms that reflects light with a wavelength ...

Then you are not reading what I am writing. So I'll refer you back to the previous post that was directed at you: Your claim that there is red "in" th...

The "common sense" view, before any scientific study, is naive realism: Naive realism 1. Colours, as ordinarily understood, are sui generis, simple, i...

Neural representations of perceptual color experience in the human ventral visual pathway: So colour experiences change when the neural activity in V4...

Colour sensations occur when there is neural activity in the visual cortex. These explain dreams, hallucinations, variations in colour perception, and...

There is no red "in" the pen. The pen just has a surface layer of atoms that reflects light with a wavelength of ~700nm. When light stimulates the eye...

Perhaps, but sufficient nonetheless. I know that today’s headache is much like yesterday’s headache and that I hid my toys under the floorboards of my...

My memory is sufficient. I have every reason to believe that today's headache is much like last yesterday’s headache. I don't need some other person t...

The present scientific view is that colour percepts exist, and do so when there is neurological activity in the visual cortex. This is what explains d...

Which is wrong, because I don't (except insofar as an external stimulus is causally responsible for the sensation). All I need is visually distinguish...