Aw shucks tim wood, that's a helluva compliment! Hopefully I can keep it clear as we discuss here as well.
I posit that this is the best we can hope for as a starting point of epistemology, or it may even be considered a heuristic for proto-epistemology because I believe that this is the point that we must start from the moment the enquiry commences, prior even to any formal epistemology. — TVCL
I agree TVCL. In my reading I see argument expressed in different ways within Descartes, Locke, Popper, etc. If you construct a theory of knowledge, it must be able to be applied to itself. So to start, you must come up with a conclusion that cannot be contradicted. From there, you can build upon it. How one words its is important, and how one builds upon it can lead to different places that can end up very wrong.
For my point, I avoid the idea of "truth" in the formation of knowledge. If you do not know what knowledge is, how can you know the truth? Earlier in your posts you stated, "In all fairness, I never define truth and am not altogether sure whether I should at this point." You knew that something bugged you about it right?
If you use the word truth in your initial premise without quite knowing what it is, your foundation is based on an induction, and not a deduction. A deduction as defined here will be, "A conclusion that cannot be contradicted from the premises, and any further information we introduce." So we don't get too confused on that point either, if you read the link you'll note that definitions are based upon the contexts of two people. Since its you and I at this point, a deduction for both of us will be a conclusion that neither of us can contradict with the information at hand. In including more people, we make it more difficult to deduce, but can be more hopeful that it is exposed to more "potential contradictions" then you or I alone could throw at it.
An induction is by our definition, "A conclusion that does not necessarily follow from the premises and information on hand. Again, this will be within the context of both of us. I note in link four that an induction is less valid, which I'm sure most will agree on. This leads us to your use of truth without a clear definition.
We first need a clear definition that we can then attempt to deductively apply to reality. Since your use of truth is not clear, it can only be inductively applied to reality. We can induce many things against reality, but this is where knowledge theories fail. If we are to claim, "I know what knowledge is," there must be as little induction as possible.
But I feel we can remove the word "truth" in your writing and replace it with "knowledge". Truth is generally seen as an objective reality apart from the subjective. You are talking about truth as a subjective, and used as a tool. To me, that is what knowledge is. It is a tool human being use to understand their world as correctly as possible to obtain their goals.
You are also currently examining the self-subjective viewpoint, and have not yet expanded it into contexts like societies. Once you start doing that, you'll see your use of truth runs into some problems. People generally think of truth like an objective, but you'll run into a situation in which your "truth" and another "truth" will come into conflict.
For example, lets say you decide your goal is to get to the North Pole using only a compass as a directional guide. You let everyone know, then shut off communication for a month as you make your way North, and finally arrive at the North Pole! You did it! You reached your goal! Except unknown to you, a prankster flipped your compass signals, you you're actually at the South Pole. Did you travel both North and South? No, as you mentioned, that is a contradiction. But your "truth", and the "truth" of the GPS signal that tells the world where you are are in contradiction. At that point you have contradictory truths, and your base starts to crumble as you try to reconcile them without quite knowing what truth means. Make it knowledge instead of truth, and we can view these conflicts as a puzzle to be worked through.
And finally, changing you "truth" to "knowledge" helps solve the circularity issue of truth measuring truth. You are talking about two separate identities. An objective reality that you have a difficult time defining, and a methodological attempt to create conclusions about the world that fit within that objective reality. I postulate the objective reality, which is something that cannot be contradicted, is truth, while our methodology to grasp this is knowledge. What do you think?
Regardless, I believe we can both agree that knowledge is a tool, and like any good tool:
1. Knowledge must be useful to us
2. Knowledge must be consistent
3. And one way we can establish knowledge is consistent, is if its methodology is built on a foundation of deductions, not inductions. This is because inductions are beliefs that can potentially be contradicted with the information we have.
The first deduction you realized was, "To claim knowledge of something, it must be free of contradictions".
As for my statement, "Any discussion of knowledge must begin with beliefs", that's just because I suck at introductions. =) A better sentence would probably have been, "All discussions of knowledge eventually must address beliefs, so that is where I will begin." You can begin anywhere in the discussion of knowledge, but I believe it has to inevitably address a few issues, beliefs being one of them.
Regardless, feel free to continue to use your heuristic in the manner you understand in our discussion. Since I think I know where you are coming from, I think we both have a context that we can understand. If the heuristic runs into potential problems, I'll point them out. Please do the same with mine. Maybe we'll get somewhere with knowledge, and if not, I think we'll both have a good time.