I'll try and work through this.
:)
I know that everything I will present from 1 to 4 is debatable, but, for the sake of the argument, let's assume that we all agree that everything up to 4 is proven to be false. — Eugen
Understood.
Therefore, if I were a materialist.
1. Strong emergence - I would accept that it is logically impossible and that it is not pure materialism anyway.
If I were a (materialist) naturalist/physicalist I might try and make something of strong emergentism in order to keep my concept of phenomenal consciousness. But we're assuming it's false, so that's OK. No strong emergentism.
2. Therefore, I would adopt weak emergence. That would force me to adopt the identity theory.
I would adopt weak emergence. And I'd jump straight to functionalism. I didn't think functionalism was a subset of identity theory. I thought Identity theory was that the mind is the brain, or something like that. But I could be wrong. Anyway, weak emergence is rejected too, fair enough.
3. Type-Type Identity can be refuted by multiple realization.
So a type of mind is identical to a type of physical system? I guess that can be refuted by multiple realisation. But multiple realisation hasn't been proven. However it is intuitively plausible and is arguably entailed by functionalism. So we ditch that as well, fair enough.
4. So, the next step is to adopt Token-Type. Here the problem arises: depending on what we categorize an emotion?
Token-type identity? Which side is the physical, which the mental? I don't think I've understood this one. I did a quick search and nothing immediately came up.
4.1. The only way here is represented by functionalism, which can in turn be refuted by inverted qualia or multiple realization.
If I were a physicalist functionalism is an attractive option. It has a number of virtues. Inverted qualia may be a problem for functionalism (but it hasn't been shown as far as I am aware), but I thought multiple realisability was one of its features, not a bug.
Unfortunately, I have noticed that most materialists stop here. But, if I were a materialist, I would go further and eliminate the notion of Type altogether.
There are no types of experiences, only experiences. Toothache and leg pain are classified as pains only because they are similar, so it is for language purpose, but in reality they are two different things. Similar does not mean identical,...
I disagree with you here. In principle one could have two identical brains realising the same function. In that way we would have two experience of the same type, assuming functionalism. They would be qualitatively identical, but quantitatively distinct. Have I misunderstood you?
so:
1. We don't need the same physical structure - multiple realization solved.
Having no categories, but simply experiences, I don't need a justification for fitting an experience into a category, so:
I don't follow you here, sorry
2. I don't need to equate an experience with a function. There is no law of nature that prevents the existence of an experience without it fulfilling a specific purpose.
I agree with you. So we're ditching functionalism here?
I realize that this position is very weak in terms of explanatory power, but I don't see any logical argument that invalidates this exact position. So feel free to hit me with counterarguments. Thank you!
I'm unclear what your physicalist position is that you have arrived at. So what is an experience in this view?
EDIT: I sense logical thought in the OP, but there is too little concession to the reader to clearly discern it.
EDIT: the psychology of the materialist is odd here. He's decided to be a materialist, and then set about finding a coherent line. I guess that's what someone who isn't starting out as a materialist would do to charitably try to find a coherent materialist position.