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Originally Posted by worzel
I think the most fundamental meaning of the word "truth" is that which is actually true
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Well there's a circular definition if I ever heard one. But the point is not to attack any particular definition of truth, it is to make the simple point that any effort to define truth as something absolute will automatically exclude a large fraction of human endeavor. That is certainly allowable, but a new word must appear in its place, and above all, scientists cannot lay claim to the word without permission from the rest of the population. Science cannot lay claim to any truth beyond scientific truth, which is a form of truth that is long on efficacy and short on profundity. Personally, I am happy that scientists need not seek a profound sense of truth, they can stick to "the proof is in the pudding" approach that is quite a bit more concrete. But I am also aware of the price that is paid, in terms of limiting the applicability of the term to areas of scientific inquiry. A quick perusal of any collegiate curriculum will demonstrate the point-- this is a limited area of applicability. The "my way or the highway" mindset that is rather rife on this forum will not serve science in the long run-- it is shortsighted and tends to alienate rather than educate.
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Originally Posted by worzel
But to someone else, what you claim to be fact could in fact be false by their definition of fact and your reasoning. How can anything meaningfull be said about anything if anyone can use any approach they like for ascertaining truth?
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Let me answer that with an analogy. Chess is a game with certain rules. If you play a game of chess, you may assume your opponent will not suddenly grab your king and say, "I win, haha." They have entered into those rules when they sat down with you. But this does not mean there are not other games, with other rules. So it is with methods of ascertaining truth.
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Originally Posted by worzel
It is all-inclusive of truth as far as we can know it (so far).
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You are drawing a connection between the word "know" and the word "truth", but no such connection is required or implied by either term. It is true that science, of all human endeavors, seems to come closest to being able to forge such a connection, but it is a fools errand, as has been shown over and over in history. Yes, we make progress, and yes, we expand our knowledge all the time, but personally I have no doubt whatsoever that if there is a real truth, then our conception of it is so far from what it really is as to be almost laughable to higher beings (if any such beings exist, and if they are any closer to real truth). What is a dog's conception of the truth about their own world? So it is with our own, of course. Nevertheless, our accomplishments are astounding. Quite a mystery, really.
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Originally Posted by worzel
Anything further, any other modes of thought, approaches to obtaining truth etc. are literally utter hogwash if they claim to have actually established anything other than an answer of "don't know" for any question we can't, in principle at least, investigate scientifically.
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I agree, but again you are connecting the term "truth" with the term "establishing". Other modes of approach to truth do not necessarily involve establishing anything. Was Van Gogh trying to paint something true? I imagine he felt so, for lack of a better word (again, the syntactic problem). What, then, did he "establish" by doing so? Was his contribution valueless as a result? Most nonscientific quests for truth are unable to aspire to an objective result, the way science is. That's because objectivity is hard-wired into the goals of science, which is of course both its greatest strength and its greatest limitation. You will probably claim it is simply because science is the only pursuit that is not hogwash, but I think that's just a shame.
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Originally Posted by worzel
No no no. It is actually true that objects gravitate towards each other.
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Agreed, it is an observed fact that all else being equal, the distance between two objects will decrease with time. This requires definition of time and distance, which will be defined scientifically (involving measurement, of course), which will already throw "truth" out the window in favor of efficacy (who knows what is really true about possible descriptions of events, but we settle for their time and location because our brains can conceive it and we can measure it. A thousand years from now, we might use something a bit different. It certainly came as a shock when time and space got unified.) But the really interesting part is the "all else being equal" part. Just what else has to be equal for two objects to gravitate toward each other? We have no idea, we don't have examples of things that don't so gravitate. Not yet, anyway. Maybe we never will. It will never imply that such things don't or can't exist, there just is no place for them in science until they are observable as such.
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Originally Posted by worzel
The fact that the Sun and the planets have the particular relative motions they do is fact, truth, absolutely and unequivacally as is the fact that I am typing this message.
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What I would say is that it is a fact that if you take the Sun and planets and project them onto the human concept of "motion", and further project the concept of motion onto the human measurables "time" and "distance", you will indeed get a certain result that we will call a fact. Is this what they are "really doing"? How much truth has been thrown away in the process of making those projections? We may never know, or maybe someday we will learn they are doing more than just this, in some higher dimension or alternate description of reality (string theory and quantum mechanics are already examples of this, but they don't really count because there is nothing left of importance on the scale of a planet). We will never discover that astrology is scientific, for example, because that has already been tested and it never conformed to a scientific model in the first place. But we will certainly never know that our conception of Sun and planet, and their motion, is anywhere remotely close to all that is going on there. You can say it's all you care about, others may not agree. It's simply not an absolute truth.
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Originally Posted by worzel
Yes, people do feel cheated and want more truth than we can figure out even by a modest standard of certainty. I feel sorry for them. I think we should help them to grow up and accept the fact that that's all we know so far rather than encourage them to think that their mental delusions are the result of legitamate approaches to ascertaining "truth".
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There is absolutely nothing scientific about that statement, and nothing in it that is establishable using science. It is essentially an expression of your own personal religion. That's fine, you are as allowed to have your own subjective version of what is right as anyone else.