Talk:Functionalism (philosophy of mind)

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Contents 1 Request: Addition of Functionalist vs. Physicalist debates 2 Notice: Removal of clause 3 Request: Cleanup 4 Memory 5 Request: Kripke's argument 6 Missing Reference? 7 Functionalism 8 More info 9 Merge? 10 Request: clarify problem with supervenience thesis

[edit] Request: Addition of Functionalist vs. Physicalist debates

This article could use more content (I know the response: So write it! but I don't think I'm qualified). Recent debates include arguments by Daniel Dennett ("Multiple-Drafts," "fame in the brain," "cerebral celebrity") and Ned Block ("different concepts of consciousness", phenomenality, access, reflexivity). Maybe from those two philosophers (articles are easily findable on Google), the page can shape up.

[edit] Notice: Removal of clause

Removed the clause "(the algorithm must have certain limitations)", whose editor fails to understand that those limitations are part of the definition of algorithm (the part that distinguishes algorithms from more general programs).

[edit] Request: Cleanup

IMO, BTW, bcz of the handwaving of "The definition of functional states with reference to the part they play in the operation of the entire entity - ie. in reference to the other functional states", this statement of the concept renders the rigor of the Turing machine references mere window dressing. Hopefully someone who knows more abt the subject of the article than that editor or i do can clean it up. --Jerzy 23:54, 2004 Feb 8 (UTC)

Hi all. I just made some changes. It seemed like it could use some cleaning up. Note: (1) I mostly tried to clarify some of the arguments under the criticism section. I also added a section for Block's Chinese Nation argument. It was sort of briefly covered in the Homuncular functionalism section, but it is properly a criticism and should be separately covered. (2) Also, of major importance, I noticed that a lot of the info in this entry was pretty much copied directly or only slightly changed from Block's intro titled "What is Functionalism?", which can be found online. This is a sad plagiarism issue and only hurts Wikipedia. Plus, it had references in the text that weren't even in the Wikipedia article--presumably because the person did not care to check it over. (3) I think the Homuncular functionalism section is still pretty shakey. Hopefully someone can clean it up. --Jaymay 09:51, 27 July 2006 (UTC)

[edit] Memory

As to treating memory as an output, in terms of the article, this ruins the argument unless it is also an input. (Whatever treating memory so simplistically may do to philosophical credibility; do they really not acknowledge that human memory is more like part of the computation process than an analogue of RAM or even associative memory? --Jerzy 00:57, 2004 Feb 9 (UTC)

[edit] Request: Kripke's argument

Hey, don't leave us hanging! I want to know what Kripke's argument is! Maybe in a separate article ... Ppe42 21:07, Oct 21, 2004 (UTC)

It's beyond the scope of the article. I've included the source so that you may read the argument yourself. Briefly, if mental state M = functional state F, then that identity is necessary. however it is easy to imagine some creature with F but not M, or vice versa. In other words, the identity M = F seems contingent. Functional identity theorists will have to give an argument as to why there is an apparent contingency in M = F if M really is F. Nortexoid 07:17, 8 Dec 2004 (UTC)

[edit] Missing Reference?

There's no reference to Searle's chinese room thought experiment as criticism. Isn't this possibly the foremost criticism of functionalism? Atolmazel 11:20, 23 Jun 2005 GMT

Yes definatly! I added a few lines on it to the critisim section and reorganised it a little bit. Feel free to amend what I wrote and make it more definitive. The main page seems to address everything in a very comprehensive way.

--Korona 20:52, 16 October 2005 (UTC)

[edit] Functionalism

From Joseph LeDoux's "The Emotional Brain"; ISBN: 0684836599; 1996; p. 27—

One of the most important conceptual developments in the establishment of cognitive science was a philosophical position known as functionalism, which holds that intelligent functions carried out by different machines reflect the same underlying process.

According to functionalism (philosophy of mind) (Second Para.), the mental states that make up consciousness can essentially be defined as complex interactions between different functional processes. Because these processes are not limited to a particular physical state or physical medium, they can be realized in multiple ways, including, theoretically, within non-biological systems.

For example, a computer and a person can both add 2 + 5 and come up with 7. The fact that both achieve the same answer cannot be explained by the use of similar hardware—brains are made of biological stuff and computers of electronic parts. The similar outcome must be due to a similar process that occurs at a functional level. In spite of the fact that the hardware in the machines is vastly different, the software or program that each executes may be the same. Functionalism thus holds that the mind {software} is to the brain {hardware} as a computer program {applications and data base—software} is to the computer hardware.

Cognitive scientists, carrying the functionalist banner, have been allowed to pursue the functional organization of the mind without reference to the hardware that generates the functional states. According to functionalist doctrine, cognitive science stands on its own as a discipline—it does not require that we know anything about the brain. This logic was a shot in the arm to the field, giving it a strong sense of independence. Regardless of whether they do experiments on humans or use computer simulations of the human mind, many cognitive scientists today are functionalists.

This is a philosophical position which proposes that mental functions (thinking, reasoning, planning, feeling) are functional {being, i.e. verbs} rather than physical states {nouns}. When a person and a computer add 2 to 5 and come up with 7, the similar outcome cannot be based on similar physical makeup, but instead must be due to a functional equivalence of the processes involved. As a result, it is possible to study mental processes using computer simulations. Minds might in principle even exist without bodies. (Based on J.A. Fodor, The Mind-Body Problem. Scientific American [January 1981], Vol. 244, p. 118.)

Yesselman 23:57, 22 December 2005 (UTC)

[edit] More info

Need more info on representional functionalism. 71.250.15.252 00:57, 15 April 2006 (UTC)

Now that may indeed be useful. So why don't do DO something about it?--Lacatosias 10:32, 15 April 2006 (UTC)

[edit] Merge?

I disagree. The two articles are importantly different as the psychology/cognitive science article is includes parts focussed to psych/cog (for instance in the case of inductive functionalism and experimental interpretation) whereas the philosophy of mind omits parts that are irrelevant to philosophy but important to psychology/cognitive science.--137.222.120.32 16:41, 25 May 2006 (UTC)

perhaps a merge between this article and Functionalism (psychology)? 71.250.15.252 00:59, 15 April 2006 (UTC)

I think that the two should be merged, but that the content that does not overlap should just be added to the other one. Both entries are of the same general thesis, it's just that the psychology one has more info on cog sci stuff. So why not just add that info in under their own headings? BTW, the philosophy info on the psychology entry is very sketchy. I guess keeping them separate though isn't a big deal. Just a thought. --Jaymay 09:55, 27 July 2006 (UTC)

Merge: There is exremely little in the other pshycology article that is not present already (or cannot be easily and appropiately added) to the philosophy article. Cog sci is an studied intensively by philosophers of mind as well as pshologigists, anthrologopists , etc... But we don't nedd fifty five separate article for them. We can just state, at the top, funcionalism is the thesis in philosophy, cog. sci. and so on.--Francesco Franco aka Lacatosias 10:35, 27 July 2006 (UTC)

Yeah, looking at it again, you basically have a philosphy article over there. There's no distinction.--Francesco Franco aka Lacatosias 10:38, 27 July 2006 (UTC)

[edit] Request: clarify problem with supervenience thesis

The problem for supervenience is not clear. Does the author suggest that there is a change in either M or M1 that does NOT involve a change in P? (If so, point it out.) Or does the author suggest that "the underlying physical substratum" does not exist in the case of M since M's (immediate) underlying substratum is mental? (If so, I'm afraid this is a special version of the supervenience relation, one that rules out any intermediate mental levels between the relata. This feature should be acknowledged.) The principle, as stated, does not rule out "totally different sets of mental facts" supervening on P.

"But this would seem to put into serious doubt, if not directly contradict, the fundamental idea of the supervenience thesis: there can be no change in the mental realm without some change in the underlying physical substratum. This can be easily seen if we label the set of mental facts that occur at the higher-level M and the set of mental facts that occur at the lower-level M1. Given the transitivity of supervenience, if M supervenes on M1 and M1 supervenes on P (physical base), then M and M1 both supervene on P, even though they are (allegedly) totally different sets of mental facts."

I am confused by this too. Say we take the China brain example. We have one set of mental facts -- the "collective mind" formed by the organisation of Chinese people -- which supervenes on a set of physical facts P. We also have the individual minds of the Chinese people, each of which supervenes on a unique subset of P. So there is no problem at all: the situation described in the quotation above simply doesn't arise.

Suppose we consider multiple levels of a single mind, so that M1 and M2 actually do supervene on the same set of physical facts. Functionalism is (something like) the idea that minds result from certain organisations of matter [*]. In principle, it is possible that the organisation of a single physical structure could be described in a number of different ways, and if each of these different descriptions characterises a set of mental facts, it's entirely possible for two different sets of mental facts to supervene on a single set of physical facts (and at the same time, for M2 to supervene on M1). Nonethless, if there is any change in the organisation of the relevant physical structure, both sets of mental facts will necessarily change, since they both supervene on the same physical organisation.

Having said this, it might in principle be possible that a change in P could cause a change in M1 but not in M2 (or vice versa) if the change were irrelevant to one of the descriptions of P which characterises M1/2. Again, this is not a problem because functionalism, strictly speaking, is the thesis that the mental supervenes on the organisation of the physical, not the physical tout court.

[*] Or I guess the organisation of anything -- in principle it doesn't have to be matter. Cadr 12:46, 10 June 2006 (UTC)