PratchettFan
Gold Member
- Jun 20, 2012
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What I am not getting is the distinction you are making between evidence and demonstration. Another way of looking at it, of course, that instead of me limiting my knowledge, you are confusing belief with knowledge. Which is ok when it has no consequences.
I have two major hobbies. The first is motorcycles and the second diving. I do some extreme diving involving closed circuit rebreathers with extended decompression. It's what I love. But if I confused what I believed to be true with what I knew to be true, I would have died years ago. There is a definite difference between the two. So when Aristotle says you can have knowledge without demonstration, I can only presume he had an indoor job with no sharp objects.
I can see that you are struggling with this, but I think it is only because you aren't thinking through the difference between knowledge that is or is not demonstrable. If you see your friend that you love grieving over the loss of a loved one, even if you had never experienced or witnessed grief before and did not know the proper word for grief or nobody had ever explained it to you, you would see and have a sense of what your friend was experiencing and that it was an unpleasant and hurtful experience. You would have gained knowledge about grief that you did not posses before.
You can relate or describe your friend's grief to another person once you have knowledge about grief, but you cannot demonstrate it. You have knowledge of many things that you saw or heard or experienced yesterday or last week or last month, and you can relate your best description of these to others, but you cannot demonstrate many of them to a single other soul. If you or nobody you are aware of took a picture, how do you demonstrate to me the glorious sunset you saw last night? You have the knowledge. But the knowledge is not demonstrable. Ergo Aristotle's teaching that knowledge does not have to be demonstrable.
I see what you are saying. I require evidence to have knowledge, but simply because I can't express that knowledge to you does not mean I do not have that knowledge. Is that it?
That's pretty much it. IMO all knowledge is based on what we see, hear, touch, smell, taste, read, observe, experience, reason,understand and I try hard not to put artificial limits on any of that. If you label all that 'evidence', I have no problem with that. Is all that knowledge demonstrable to others? No it won't be.
I get you now. And this is fine so long as the outcome really doesn't matter.
I'm not sure what you mean by outcome. I don't see knowledge as necessarily requiring any outcome as much knowledge involves a journey of discovery that we are still on with no outcome yet in sight.
If you are sitting in a seat on an airliner about to take off from New York to London, don't you think the fact the pilot can demonstrate his knowledge there is sufficient fuel to make the trip is a bit important? If you are about to grab an exposed electrical wire, wouldn't you think your ability to demonstrate it isn't live might impact your future in some way? If there is no outcome to this claim of knowledge, then I suppose it really doesn't matter whether you can demonstrate it or not. But that is often not the case. When it matters, you need to be able to demonstrate.