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Monty Cantsin
2nd August 2006, 11:47
Seeing is Believing and The Duck-Rabbit Illusion.

Seeing is believing is a commonly held opinion. This proposition represents naive realism, which neglects the active role of individuals in interpreting perceptions (Gal, 2002, p 529). This is akin to nave psychology where the individual functions without grasping the mechanism behind his/her observations. It will be shown that the statement is proven fallible by a perceptual illusion that demonstrates the individuals interpretive role in the attainment and processing of sense stimuli. The effects of these contradictions on the claim seeing is believing will also be outlined.


(picture of the duck-rabbit Illusion inserted here)


The above duck-rabbit illusion is used to demonstrate the experience of noticing an aspect, the act of interpreting objects as we see them (Wittgenstein, 1953, p 193-4). The illustration can be seen as either a duck or a rabbit, depending upon how an individual focuses upon the image and how his/her pattern filters group the stimuli (Atkinson, Atkinson, Smith, Hilgard, 1985, p 190). When focusing ones eyes on the left, the picture seems to be of a duck, but from the right, a rabbit. This interpretive act affects the claim by making its absolute stance, seeing is believing untenable, when we are not the passive receivers of sensory data but active participants.

The fallibility of perceptual information has led some perspectives to argue claims about the external world are dubious. Exemplified by Descartes demons and hyperbolic doubt, according to which if a source is inaccurate once, we should never entirely trust it again (Fearn, 2002, p 76). Therefore this perspective proposes that as our perceptual faculties can lead to a false proposition it would be absurd to believe them (Fearn, 2002, p77). This perspective contradicts the claim seeing is believing as an absolute claim that all belief is reduced to external sensory information.

Another perspective on fallibility argues that particular statements about the world are found true or false not individually but as a corporate body (Quine, 1980, 41).Therefore a claim is not falsified as a whole by contrary information, but adjusted to incorporate new perceptual data (Quine, 1980, 43). According to this view, the duck-rabbit perceptual illusion, which can draw someone into inaccurate conclusions and beliefs (i.e. its a duck) does not invalidate all sensory information as it does for Descartes. This view characterised the claim that seeing is believing as radical reductionism, Where the relation of seeing and belief is direct report (i.e. I see, therefore I believe). Quine considered this a naive and dogmatic approach to empiricism (Quine, 1980, 38).

The central claim seeing is believing is proven a faulty position to hold by the inconsistent results yielded by particular sensory data, as demonstrated by the duck rabbit illusion. Two possible trends which result from the fallibility of sense experience, one represented by Descartes, choose to doubt it as a source for justifiable belief (Fearn, 2002, p77). Quine on the other hand, takes a more rational pragmatic view that seeing does not correlate to believing in particular terms but only in totality with all other observations(Quine, 1980, 43-6). In either view the claim seeing is believing is flawed by the philosophical naivety of its position.

Bibliography

Atkinson, R. L. Atkinson, R. C. Smith, E.E. Hilgard, E. R. 1985, Psychology, 9th Ed, Harcourt Brace Jovanovich, USA.

Fearn, N. 2002, Zeno and the Tortoise, 1st Ed, Atlantic books, London.

Gal, O. 2002, Constructivism for Philosophers (Be it a Remark on Realism), Perspectives on Science, Vol 10, no 4, pp. 523-549.

Quine, W. V. O. 1980, From a logical point of view, 2nd ed, Harvard university press, USA.

Wittgenstein, L. 1953, Philosophical Investigations, Basial Blackwell, Oxford.


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This is the frist philosophical essay i've done for a uni class. The question was discuss with reference to one perceptual illusion the claim seeing is believing. Anyways thats what I came up with and you can steal it if you want just dont get done for plagiarism.

Rosa Lichtenstein
2nd August 2006, 12:05
Nice essay, Monty; you might like to check-out the work of Norwood Russell Hanson, who applied these (and other ideas of W's) to the philosophy of science:

Hanson, N. (1962), Leverrier: The Zenith And Nadir Of Newtonian Mechanics, Isis 53, pp.359-78; reprinted in Hanson (1971a), pp.103-26.
--------, (1965), Patterns Of Discovery (Cambridge University Press).
--------, (1969), Perception And Discovery (Freeman, Cooper & Company).
--------, (1970), A Picture Theory Of Meaning, in Colodny (1970), pp.233-74; reprinted in Hanson (1971a), pp.3-49.
--------, (1971a), What I Do Not Believe, And Other Essays (Reidel).
--------, (1971b), On The Impossibility Of Any Future Metaphysics, in Hanson (1971a), pp.222-33.
--------, (1972), Observation And Explanation (George Allen & Unwin).
--------, (1973), Constellations And Conjectures (Reidel).

He died in a 'plane crash in 1967, which prevented him from becoming a dominant philosophical figure. I base much of my work on him.

http://en.wikipedia.org/wiki/Norwood_Russell_Hanson

http://philsci.com/book7.htm

Monty Cantsin
8th August 2006, 16:20
I got the mark for this essay back today, High distinction, 100%....irrlevent for everyone else, i know. but i like it.

edit, i checked the library, they have most of those books so i'll have a look.

Recommendation of the first and or fastest way to understand this guy, i.e. what should I read with minimal time to do so?

BurnTheOliveTree
8th August 2006, 16:32
Monty... Perhaps i've missed the point like last time, but i'm wondering if the duck-rabbit illusion really defeats the seeing is believing thing. I mean, couldn't you just say "I can see a picture that can be viewed both as a rabbit and a duck"?

This strikes me as so obvious that I must have missed something. But I did read the essay this time. Scouts honour and what not. :)

-Alex

EDIT: Well done on your 100 percent.

rouchambeau
8th August 2006, 21:30
"Burntheolivetree", if it helps think of a pencil (or even a finger!) put diagonally into a glass of water. If you do it the pencil looks broken, but really isn't.

BurnTheOliveTree
8th August 2006, 22:43
The same point applies to that, doesn't it? "I see water, warping my perception of the pencil."


:huh: I'm confused. Unless you are actually fooled by the illusion, seeing is still believing. I must have missed something somewhere.

-Alex

rouchambeau
8th August 2006, 23:53
You're right that one is still believing what they are seeing.

I think the author is saying that what we belive we are seeing may not really exist the way we think it does. We cannot always assume that what we are seeing is actually what is there.

Another point is that our minds play a role in determining what we think we are seeing. The picture is really just several lines and smugges. It's the MIND that decides was to think of it (rabbit or duck). Even then, the mind can be fooled.

Monty Cantsin
9th August 2006, 15:40
The argument isnt that observation is not a source of belief or knowledge. But that direct report between I see hence I believe is not infallible. Therefore I outlined two responses, one was scepticism. The other was confirmation holism which says our statements about the world have to be taken as a whole - so that one example doesnt invalidate all belief based on seeing but rather just the direct report relationship - i.e youve got to consider other observations that counter the original onelike its a duck and then its a rabbit - therefore its a picture that can be interpreted in different ways depending upon the individuals focus.

BurnTheOliveTree
9th August 2006, 17:05
Okay... I think I understand. Still a bit shaky though, this confirmation holism (I confess i've never once heard the term) says we should use our visual perception as part of an overall perception, drawing from other senses and things? Hmm. If so, i think the penny has begun to drop. What we SEE is only lines that could represent a duck or rabbit, it needs analysis from the mind to come up with "It is an illusion showing both a duck and a rabbit"?


-Alex

Monty Cantsin
9th August 2006, 17:30
Not exactly but your geting there.

this is the source though it you want to check it out - Quine, W. V. O. 1980, From a logical point of view, 2nd ed, Harvard university press, USA.

or online at MIA - http://marxists.anu.edu.au/reference/subje...sophy/index.htm (http://marxists.anu.edu.au/reference/subject/philosophy/index.htm)

BurnTheOliveTree
9th August 2006, 17:39
Merci beaucoup. I shall fetch my spectacles. :o

-Alex