Rationalism & Science & Maths & what you really think but don't even know yourselves!

We learned (didn't we?) that there is a strand of rationalist philosophy, that still just about persists, that wants to claim for philosophy, the kind of certainty that science and maths claims. It wants to be able to find the kind of 'objective' 'a priori', necessary truth that mathematical theories have, it wants to be able to do what science does and abstract 'universal' laws and principles from its observations. It wants to be able to say 'this is how things really are!' It wants to strip away appearance and uncover the 'reality' behind it.

Most of you seem to think that you think it can't do this. Most of you seem to think that you think there is no objective truth, but I don't believe you really think it. After all aren't claims like 'the Earth goes round the Sun' closer to being true than the claim that 'the Sun goes round the Earth.'? So doesn't that mean that science is getting closer to the Truth?

Do you really think that the only measure of truth is agreement? I don't think you really think that if we all agreed that eating custard creams prevented heart disease then it would be true that eating custard creams prevented heart disease.

I think you all really think that there is a 'way things really are'. 

But I don't.  So there.

Lots of new stuff!

I've put lots of new stuff on here this weekend so please take the time and trouble to read it carefully.  Some comments would be nice also.  Even if you think you understand something it is ALWAYS worth reading about it and going over again in your mind. 

WITTGENSTEIN'S, BEETLE, THE PRIVATE LANGUAGE ARGUMENT & SOLIPSISM: SOME MORE THOUGHTS

We’ve had a little trouble with us, so I've written the following in order to think it through. I offer it here because sharing meaning is what it's all about! 

It's the idea of naming objects (naming sense impressions) that's the problem. Because we can't see into each other's boxes/brains, then if we were to  name a sense impression we would do so on our own. 

Imagine this (it’s a little like my sausage example, but has less distracting comic potential): Sam and I are looking at a watch and I say, “Sam, that’s a watch,” and Sam says, “I agree.” So we both attach the name ‘watch’ to the sense impression inside our heads. 

Now, what we have done is EXACTLY THE SAME as both agreeing that we each have a ‘beetle’ in our matchboxes, without being able to see them, because we can’t see inside each other’s head anymore than we can see in each other’s matchbox. 

The point is difficult to grasp this because when Sam and I are both looking at the watch, when I see Sam seeing the watch, I 'automatically' assume he is seeing the same as me. (I'm almost certain he is, but that's not the point here.) It's the 'seeing' that misleads us. 

Imagine the same situation if we were both blind. Although we could both feel the watch, hear it ticking etc. I don't think we would have anything like the same confidence that we both perceived the watch in exactly the same way. I think we would be much less likely to attach meaning to the object itself and much more likely to create that meaning in the language and behaviour that surrounded the object.

I think there's something about the act of 'seeing' that makes it seem very powerful in the way we understand the world around us, (that's probably why I draw so many diagrams.) 

The ‘meaning’ of watch is not attached to the object, but is in all the things we ever say and do with the watch. 

Imagine a society, perhaps in the future, where people have developed a pretty accurate inbuilt sense of what the time is. They are a very laid back relaxed kind of people and think that the few people who are still obsessed with time and still wear watches are at best old-fashioned and at worst insane. In such a place the meaning of ‘watch’ would be quite different. Wouldn’t it? Think how the question ‘Do you wear a watch?’ would be different. So the meaning of ‘watch’ is not attached to the object but to the language use that surrounds it. 

So the naming of sense impressions in our heads, the naming of beetles in boxes, is without meaning. We have to forget 'naming' sense impressions as giving meaning and see that meaning only comes about through language use. 

Does that help? Comments please.

R.F. Holland ('e durnt loike them ol' empiricist fellas!)

We read a 'characterisation' of empiricism by R. F. Holland from his book Against Empiricism: on Education, Epistemology, and Value, in which he alludes to three potential problems with empiricism. He believes that the empiricist account of the origin of ideas involves 'raw materials' entering the 'factory' of the mind in which they are 'processed and emerge cut and dried.' 

The notion of the 'mind 'processing' ideas seems to be beyond the explanations of empiricist theory; neither Locke nor Hume offer any detail on this 'process', but then how could they? Why would they? What does Holland want? Mmm..?

Holland also, perhaps more importantly, brings up what we might call the 'homunculus problem'. He characterises the empiricist theory of the way ideas spring from sense data as requiring a 'mind's eye' that 'surveys the products of its own efforts', as if a little man (homunculus) is required to look at the 'processed' sense impressions in order to make sense of them. This of course suggests another homunculus inside the first and so on into infinite regress. 

I think Holland is probably missing the point, but this is not the time to say why. His criticism is powerful. 

Holland also gently mocks Hume's notion of the 'pre-established harmony'  by which 'we find that our thoughts and conceptions have occurred in an order matching the order of events in the other works of nature.'  Holland is here referring to the apparent flaws in empiricist thinking that seem to lead to 'solipsism'. If we never 'advance a step beyond ourselves' as Hume suggests then how come we can reach agreement about the contents of our own minds?

Hume: some late notes as reminders

We saw how Hume, writing some 60 years later, builds on Locke's empiricist foundations and develops many of his views. Hume also rejects innate ideas and believes that all our thoughts are given through the senses.

Hume believes that;

we can divide the mind’s perceptions into two classes, on the basis of their different degrees of force and liveliness. The less forcible and lively are commonly called ‘thoughts’ or  ‘ideas’.

For Hume, these ideas are pale copies of the more direct and immediate perceptions we have when we are actually experiencing something rather than thinking about it. He calls these more direct perceptions ‘impressions’, and explains that he uses this term to mean, 'all our more lively perceptions when we hear or see or feel or love or hate or desire or will.'

So Hume thinks that ideas are got from the way we experience the world physically, emotionally and intellectually (although I'm not sure if he would approve of those divisions of our experience) but that all our ideas are 'fainter perceptions of ... our impressions.' As he puts it, 'all our ideas or more feeble perceptions are copies of our impressions or more lively ones.'

Hume's Marvelous Method for Solving Philosophical Disputes!

As Hume believed that all ideas were faint 'copies' of the sense 'impressions' that they originated in, he was able to propose a method for solving certain philosophical problems by tracing the ideas these problems involved back to their original 'impressions'. If an idea could not be traced back to its original sense 'impression' then it must be empty, meaningless and not worth pursuing. 

I got you to try to apply this 'method' to the notion of  'a time when nothing happens'. This caused a lot of confusion and 'debate', but eventually we all agreed (I think) that because we could not have experienced a time when nothing happens, we cannot have a sense impression to base our idea on and therefore the idea was empty and meaningless. 

It is confusing because we 'think' we can imagine such a time, but we tend to imagine ourselves or someone 'observing' nothing happening, but of course the observation itself is something happening.

So we agreed that what we actually experience as 'time' is in fact change and 'time' as a 'substance' separate from change does not exist if Hume is correct. 

Locke's Primary & Secondary Qualities

We saw how Locke’s views on ‘primary’ and ‘secondary’ qualities emphasise his belief in the physical world as grounding the sense data that empiricism relies on.

Locke’s famous snowball has primary qualities of ‘solidity, extension, figure and mobility’, in other words it takes up a certain round space in the world, you can see it and if it hits you, you’ll feel it! These qualities are in the snowball itself and will not vary according to the circumstances of the person experiencing it: they are what we might call (although I don’t think Locke does) objective qualities.

On the other hand the secondary qualities such as colours sounds and tastes vary as the circumstances of the person experiencing the snowball vary: the first snowball to hit you feels colder that than the fifth, the colour and sound it presents to your senses varies according to when, where and how you experience it.

So, if Locke thinks that the objects in the real world have primary qualities that are independent of observers then he is a ‘realist’. He thinks the world is, and is in a particular way.

Homework for Sam (mainly)

How does Wittgenstein’s 'private language argument' show the problems with Locke’s view of language as naming sense impressions/ideas in the mind? 

I believe I've answered this below! But you may disagree.

Empiricism, Solipsism, Beatles, Boxes and Wittgenstein. Oh! and the Private Language argument too.

Some catching up is required - apologies - sometimes life gets in the way. 


So I've lumped together several things, all of which are very important and your grasp of them will be crucial to your success. They are quite difficult ideas because they are counter-intuitive - we're not used to thinking them, and so they tend to slip away if you don't keep going over the ideas in your mind. If my explanations aren't good enough for you there are lots of excellent resources on the internet, in particular the podcasts available at .......


Lets start with Wittgenstein. 


Wittgenstein asks us to imagine that everybody has a matchbox with a beetle in it (init?). No-one can see inside anybody else's box, but we all agree that what's in the box is 'beetle'. The point is that it doesn't actually matter what's in the box, we could all have different things, or nothing at all, as long as we 'play' the language game referring  to the things in the boxes as 'beetle' it doesn't matter. The meaning of the word exists in the 'language use' about the things in the boxes; the meaning is dependent on this community of language users. The meaning of the word does not depend on what's in the box, but on the language use in which it is referred to. The meaning is not in the 'label' that the mind attaches to the sense impression, it is in the 'negotiation' and interaction with other language users that the meaning comes about. 

This is most relevant for us because it sheds light on the empiricist idea that words name sense impressions that are 'sealed' inside the heads of individual observers, hidden away from everyone else just like the beetles. Because we cannot share the sense impressions, but we clearly share meaning, the meaning must be outside our heads in the use of language within our language community. 


The idea that we all name the same ideas inside our heads - that all our beetles just happen to be identical is clearly absurd. (well, when I say 'clearly' ...) Nigel Warburton in his excellent book Philosophy the Classics describes it like this;  

I have privileged access to the contents of my own mind that does not extend to the contents of yours. It is as if I have special access to a private cinema in which my thoughts and feelings are displayed; no one else has any idea of what happens within my private cinema. My experience is private to me, and yours to you. No one can really know my pain or my thoughts. I can describe my inner experience to myself, and no one else is able to judge whether or not my descriptions are accurate.

SOLIPSISM

Once you have fully grasped the notion of ‘sense impressions’ as things that exist inside the mind then it’s not difficult to see how empiricism falls into solipsism. 

Be certain you really get what is implied when Hume says,‘The mind never has anything present to it except the perceptions, and can’t possibly experience their connection with objects.’ 


Although Hume has little in common with him, it might be useful to think of this as a little like Plato’s ‘cave’ analogy. All the prisoners had were the shadows on the wall, they could not turn their heads or leave the cave to check the status of the shadows; it would never occur to them to do so because, to them, the shadows were reality. Similarly we cannot leave our heads to check how fully sense impressions mirror reality. 

Hume didn’t see this as problematic, but the kind of philosophers who want to find some objective ground, some ‘certainty’ beyond the particular circumstances of time and chance do. The kind of philosophers who want to escape the ‘cave’ and see the ‘reality’ behind the appearance, do. But Hume insists that, ‘We never really advance a step beyond ourselves, nor can conceive any kind of existence, but those perceptions, which have appeared in that narrow compass.’  For Hume, we just are inside our heads with the ideas that are ‘dimmer’ copies of the original sense impressions. 

So if we are locked into our heads with our own individual sense impressions then how do we come to attach any meaning to the ‘ideas’ that the sense impressions leave us with? 

PRIVATE LANGUAGE

Wittgenstein's so called 'private Language Argument' makes  the point that a language that attempts to 'name' or give meaning to private sensations is impossible because it has no 'touchstone', no point of reference to keep its meaning consistent. This argument seems to rely on the very concept of 'meaning ' being almost synonymous (meaning the same thing) with 'sharing'.  If it isn't then you wouldn't need a 'touchstone'.  

If language is an intrinsically public phenomenon, and language sets the limits of our thoughts then the contents of our minds don’t seem as private as we might have believed.  Certainly it seems to make the notion of solipsism illogical. How can we define ourselves as solitary and locked in when the very use of the word shows us to be part of a language community.

If a private language is impossible then simply knowing a language refutes solipsism. We cannot be locked in if we are part of a language community and simply knowing a language confirms us as members of a language community. 

I'm beginning to repeat myself, so I'll stop.

You should be aware that this interpretation of Wittgenstein's views is known as the 'community view' for obvious reasons, it is not the only view, but it is the one that makes the most sense to me. (And Nigel, I believe.)