Marz Blak said:
Very well.
Let me start out by saying that, overall, my metaphysics runs toward the existential, even maybe (a bit) nihilistic, so I suspect that you take these questions much more seriously than I do.
I thus *hope* that you won't see discourse with me as a waste of your time, but acknowledge the possibility that such might turn out to be the case.
If you would still like to have a conversation with me after receiving this caveat, I would look forward to it as well, I think.
I appreciate your attitude and forgiveness for any perceived arrogance on my part.
In the following, and throughout, please realize that any time I say or imply "correctness" I mean it only as being correct from my particular mental construct.
Marz Blak said:
1) How do you know that 2+2=4?
Depends on what you mean by 'know' and what you mean by '2' '+' and '4'.
As abstractions, I know them analytically, because they are sort of implicit in the definitions of numbers and arithmetic operations (in mathematics).
This, I would consider to be all necessary to have correctly answered (1).
You know that elemental mathematical statements are correct simply because they are defined as such. ALL thought begins by the defining of concepts. This takes place in even the least intelligent entity. Naming those concepts is a part of the conscious process so as to communicate sometimes only within itself.
Do yourself a favor and never ever lose the connection between what you have named as a concept and what that concept originally was. Documentation is man's tool to assist the memory component of his intelligence. The only reason man can grow through the ages with any rapidity is because he learned to document his language and concepts so that even thousands of years later, his progress still had a chance of being saved and added to. Imagine how much better the Bible would have been taught and accepted if it had included a clear dictionary along with it.
Marz Blak said:
Empirically, I know because I can hold up two fingers, hold up two more of them, and count them all and come up with four. I've done this so often with so many numbers for such a long time now that I don't really have to hold the fingers up any more: I can do it in my head or using symbols. But every time I do it, that's basically what I'm doing mentally.
This is where confusion begins to creep in. The question (1) is not really asking anything of reality. It did not ask if 2 apples plus 2 apples equals 4 apples. Math is merely a tool expected to be used so as to better deal with reality. Math is the same even if it fit nothing in reality at all. It would simply be less useful and probably atrophy into the abyss.
Thus empirical evidence being sought so as to answer how you know that 2+2=4 is implying that it is up to reality to give evidence of something that has already been defined as being correct. This leads to a great deal of confusion as people begin to talk about whether your perception of reality is correct and dependable.
Mathematics is independent of perception but not of your ability to hold onto reasoning skills.
Marz Blak said:
2) How do you know that a ball is red?
I see a ball, it's a color, I've learned through experience that that color is one people call red.
Stop right there. Once again, already correct. No more is needed.
This again is a matter of definition. But unlike the mathematics, this definition requires that someone show you what THEY call red. Once this is accurately shown, then the concept is identified and affixed to the word.
The accuracy of their showing is the only question. But the only concern is "what THEY call red". It is merely a word to identify to a relayed usage. "Red" is not a property of reality, but a label, thus no empirical evidence of correctness is required beyond their testimony as to whether what you perceive is indeed what they see and call "red". If they saw it and called it red, then you have proof that they indeed call what you have seen, "red".
Further evidence can be added merely by shifting other possible intentions of the other person around to ensure that what you thought they were intending to show was actually what you suspected. It doesn't take much of this investigation (even an animal can do it) for your confidence to grow beyond any reasonable doubt. The typical 10 year old gets enough evidence to cause him to insist that the ball is red regardless of any attempt to show otherwise or even rename it.
You are merely identifying a name or label with what you perceive.
Marz Blak said:
How do I know that what I see as 'red' is the same thing everyone else sees? No way to know that, no point in thinking about it.
And once again, this is where confusion creeps in. There is no "what other people see as red". Others perceive something and call it red. You perceive what they are pointing to and accept their name for it. There is nothing to be "different" or "the same". There is only what was pointed to. There is nothing else to be compared such as to say "what I am seeing is different than what they are seeing".
Whatever you are seeing and identifying is all there is to the matter and is being called "red".
Marz Blak said:
3) How do you know that anything exists at all?
Existence exists. Cognito ergo sum, though I don't necessarily believe there is an 'I', per se.
Well, you got half way.
You can not use the concept in question to usefully define or describe the concept. Thus the "existence exists" is an invalid response. It would be the same as someone saying that he defines God as "God, no more need be said".
You can know there is an "I" by the same process as (1). To ensure that your defining is useful, use (2).
What other people call "I" is a concern for communication and understanding what their mental constructs entail. It is not required for correctness in knowing reality for yourself.
Marz Blak said:
4) How do you know what good is?
I don't. I have beliefs about good, but I would in no way characterize them as knowledge.
"I don't know" is probably the least used and yet most correct answer ever spoken by man.
I will leave this one for further discussion, but say that you can in fact absolutely know what good is.
Again, I appreciate your willingness to respond in earnest.