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05-03-2001, 04:49 AM | #21 | |
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Polycarp wrote:
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(This is an honest question). fG |
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05-03-2001, 05:25 AM | #22 | ||
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I agree with almost everything you said. I don't agree with your statement "I have zero chance of being wrong today because according to the evidence, the information I have today, my conclusion is correct." If you live in the Amazon and have never seen snow, then you would not be "correct" in saying the existence of snow is impossible. Perhaps I didn't explain myself well enough. The things you mentioned as being "dogmatic" would be the same types of things I would label as dogmatic. When discussing people who were alleged to live 2000 years ago I don't think we should be "dogmatic". That was my point. Peace, Polycarp [This message has been edited by Polycarp (edited May 03, 2001).] |
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05-03-2001, 05:51 AM | #23 | |
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05-03-2001, 05:53 AM | #24 | |
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05-03-2001, 05:54 AM | #25 | ||
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Peace, Polycarp |
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05-03-2001, 05:56 AM | #26 | |
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05-03-2001, 06:25 AM | #27 | ||
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I didn’t say the “thing” was actually true. I said it should be believed to be true. Here’s my original quote: “By definition, we should believe something is true if we believe it to be more than 50% probable.” If something is more than 50% likely to be true, then it exceeds the probability of all other mutually exclusive possibilities and should be believed until evidence arrives to change the belief. Here’s an example, Fred is “X” years old. Let’s say the question is whether or not we should believe that Fred is over 55 years old. There are only two possibilities – Fred is over 55 years old, OR Fred is NOT over 55 years old. Depending on how much evidence we have on Fred we will assign different probabilities to our answers. If we only knew his name was Fred and had no other info, and had never seen him, then we would probably assign a probability close to 50% which is the unknown category (Actually, I’d probably put it a little over 50% likely because Fred has not been a very common name in recent years making it slightly more likely that he’s over 55 years old). If we now add other small pieces of evidence such as his occupation, hobbies, etc., then we could adjust our probability accordingly. If Fred plays in the NBA, then our probability would skyrocket for believing that Fred was NOT over 55 years old because nobody over 55 years old has ever played in the NBA. Does this mean its impossible? No, but it makes it very unlikely that he is over 55 years old. Another point to keep in mind is that throughout this whole process of gathering evidence the “truth” of the matter doesn’t change according to our beliefs. Fred’s age remains what it is regardless of what we believe about it. Fred’s age (truth) does not change according to what we believe. Hope this helps to clarify what I believe. Peace, Polycarp |
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05-03-2001, 06:52 AM | #28 | |
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The truth depends on, or is only arrived at by, a legitimate deduction from all the facts which are truly material. --Coleridge. Wouldn't this suggest that one person's truth is not another's? |
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05-03-2001, 06:57 AM | #29 | ||||
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In my line of work, we have to constantly take decisions in the presence of uncertainties. We go at great length to try and quantify the uncertainties. In the end, business decisions are weighted with the uncertainty, ie. proposal 'A' that will make 10 million but has a 90% chance of success is more attractive than proposal 'B' that will make 15 million but only has a 55% chance of success. In your approach we would 'believe' in the success of both proposals, because their probabilities are both larger than 50%. In the absence of sufficient funds to do both, we then would go for 'B' because that would make more money if successful. This would be an unwise strategy, and in the long run you would make less money than by basing your decisions on the 'expected value', ie. the return times the probability of success. The morale of the story: learn to live with your uncertainties. fG |
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05-03-2001, 08:11 AM | #30 | |
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In history, there is no "benefit" in a cost/benefit analysis, so all factors are equal. Going back to my analogy - what "benefit" or "payoff" is there in whether or not you believe Fred is over 55 years old? You're simply changing the topic... Peace, Polycarp |
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