@kennethamy,
kennethamy;131452 wrote:But don't you think that even Berkeley would distinguish between the sensation of kicking a rock, and kicking a rock? Even he must have thought that we could be mistaken, and had the sensation of kicking a rock, and not done so; or, going the other way, kicked a rock and not had the sensation of kicking a rock. We all have done that. I imagine even Berkeley.
That sort of thing would be a matter of the other sorts of sensations one has. For example, with a phantom pain in a nonexistent limb, one could sense (visually, as well as other ways) that the limb was missing, and so one would judge the feeling of kicking a rock without the relevant limb to be a mistaken impression. But all of this is able to be rendered in terms that Berkeley allows, and so none of this can prove him wrong.
With the example of kicking a rock without feeling it, one knows such things by observation of the rock having been moved, which is still observation or impression or whatever such words one prefers. In Berkeley's view, the rock being moved is simply that one has different impressions [of the rock] from the sorts one had before.
What one gets with Berkeley is a different description of what is going on, but without any observations being any different from the usual description of what is going on. The difference between Berkeley's view and materialism is a difference that cannot be observed empirically. Therefore, no empirical demonstration can prove him wrong. No empirical demonstration can be relevant to whether he is right or wrong.
Berkeley objected to going beyond experience and positing a something else out there in the world, when all of one's experience is sensation. Of course, he did not strictly keep to this in his discussions of God and other minds, but even in those cases, he kept them to the realm of ideas, which are the "basic stuff" of experience.
I have this queasy feeling that someone is going to mistake me for a Berkelean idealist because I am defending him here. I am not an idealist, either Berkelean or other. But I do not think that Johnson's "refutation" is in any way relevant to whether Berkeley is right or not. And that, being the subject of this thread, is why I have responded in defense of Berkeley.
---------- Post added 02-23-2010 at 01:35 PM ----------
Zetherin;131468 wrote:I think he did refute Berkeley, if Berkeley simply stated, "There are no material objects". His kicking demonstrated that an object was there. An object other than himself. The sensation of pain after kicking the rock is another matter entirely.
But I have not read thoroughly Berkeley's view, so I don't really know.
You should read Berkeley if you want to know what he said, and why he said it. But to give you a brief idea, how do you know that you have kicked a rock when you have kicked a rock? It is by the various sensations and impressions you have. But
ALL of that is in your mind. Positing an external object that is made up of something that is wholly beyond experience is unjustified; you merely have various sensations and thoughts, and cannot have experience of matter. Your experience is necessarily of thoughts and ideas, not of something wholly different. Yet the majority of people believe in something magically different from all of their experience, and pretend that their experience supports their view!
For a slightly less brief idea, see:
George Berkeley - Wikipedia, the free encyclopedia
George Berkeley (Stanford Encyclopedia of Philosophy)
But, again, it is best to directly read Berkeley. But if you are not going to take the time to do that, the second best is to read things like what is at the links above.