09-21-2007, 11:17 PM | #511 | |
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09-21-2007, 11:20 PM | #512 |
Argus Agony
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I mean you're taking a minor detail from someone's statement and attempting to use it to disprove the entire point. It's a logical fallacy referred to as a "Strawman".
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09-21-2007, 11:24 PM | #513 | |
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Further there really is only on interpretations of this experiment. You seem to have it confused with the ones where people make light come out of a Bose-Einstein condensate before it goes in which is something totally different. Those effects are not governed by Schrodinger's equation alone. You have to introduce terms for energy and such which give the equations a time direction. However for quantum events which consist purely of causality with no energy transfer there is no arrow of time. This causes serious problems for any notions of an order of events in the early universe. |
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09-21-2007, 11:28 PM | #514 |
Argus Agony
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Yes, I used less-than-apt terminology. And no, I was referring to the experiment you linked, that the idea that quantum effects propagate into past is not the widely-accepted interpretation of that experiment's results. It is an interpretation held by some, but that doesn't make it fact.
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09-22-2007, 12:00 AM | #515 | |
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09-22-2007, 12:00 AM | #516 | |
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Of course getting away from pure causality we still have several problems applying classical logic to the early universe: 1) Since positions and lengths were uncertain by the same degree as they are now there was a time when the universe's size was fluctuating be a very significant amount. 2) It was moving at relativistic speeds during a time when quantum mechanics dominated. As such we can't even mathematically describe what was going on yet. We can say for sure it wasn't nothing like what we experience now. 3) At one point the fundamental forces weren't differentiated from each other. Which pretty much destroys any chance of classical thinking having any connection to what was actually going on. 4) One of the major problems faced is how time seems to lose meaning when you go to very small scales near very large concentrations of mass. These conditions existed over the entire universe during its initial expansion so we really can't expect time then to be anything like time now. Edit: Oh and you last sentence cuts both ways. Just because more people believe one thing over another doesn't make it right. However, that line of argument leads to absolutely nowhere when talking about quantum mechanics because the no logical interpretation exactly matches the math. I choose this interpretation of the experiment because it requires the least amount of logical hoops to be jumped through before one's conclusions match the math. Last edited by Sithdarth; 09-22-2007 at 12:04 AM. |
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09-22-2007, 12:47 AM | #517 | |
Everfree
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End transmission
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FAILURE IS
LEARNING TO ACCEPT THOSE THINGS I CANNOT CHANGE Last edited by The Kneumatic Pnight; 09-22-2007 at 01:23 AM. Reason: You know what, ignore my pointless, explicitly pointless, philosophical axe grinding that goes nowhere. For now. |
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09-22-2007, 10:19 AM | #518 | |
Self-proclaimed "atheist"
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A strawman fallacy is when the opponent's position is obfuscated and changed by you so you can destroy their imaginary position. It's when you adjust your perception of the other person's argument in order to defeat the percieved argument, which is of course not nearly so good. For example, "Censorship is wrong" is not a rebuttal to "this book is terrible and should never have been made", because the person making that point never said that the book should have been censored. Taking a minor detail of the point or statement and attempting to use it to disprove the rest of the statement is either a valid logical argument or a ad hominem, depending. If the method of disproving is to say that "look, you obviously can't make a point, so why should we listen to you", then that's an ad hominem attack. On the other hand, a valid logical argument would be "but this minor point contradicts the rest", when the minor point is actually important to the point.
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09-22-2007, 10:52 AM | #519 |
Everfree
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Well, to the point where he was adding weird-ass connotations, meanings, or whatever unnecessary points to the argument: points that were neither important to, nor aspects of the argument, it should still, I think, qualify.
What I think POS inadequately explained was a failure of context. For instance, I remember once, in an argument, referring to a system that forced people to do something. Another person pointed out that, because they were not forcing people to do anything, my entire argument was invalid. Except that I referred to forcing people to do something as part of drawing a comparison between their method of doing things and other, possible methods. Failure of context: when you just stop making any friggin' sense.
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10-08-2007, 01:35 PM | #520 | |
for all seasons
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This is probably the place for this kind of thing.
http://www.elpasotimes.com/nationworld/ci_7106072 San Diego diocese seeks donations The Associated Press Article Launched: 10/06/2007 08:01:28 PM MDT Quote:
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