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Posted: Sat Apr 21, 2007 5:14 am
Quote: Except of course that this is where the Uncertainty Principle comes into play... we can't know the values of the forces and what-have-you without altering them. It is questionable whether the universe itself knows - and if it doesn't, then performing everything exactly the same way a second time might not yield the same result. Well, more or less. Pertaining to the survival theory it does make sense. But unlike organic substances, similar materialistic elements may have the exact same properties. Even if we were able to do the exact same thing exactly, the diffrence is when we do it. Or if time plays no role in it, then the problem could be where. If you know what I mean! Even if we did commit the exact procedure, there's a really high chance of different parallel forces to be acting on it. Even a slightest change drastically changes the entire result. But if the exact same thing WERE to happen then it is possible to get the exact same result. This thread reminds me of the 'Laws of Time' that I wrote an article about once. And Mustang, you are right exactly. Prediction matters only by intuition (with respect to the observer) or data calculation. However, results gaining by sentimental action or human nature has little to do with the true nature of universal chance. Although, you are quite correct, since every action (whether intentional or natural) leads to reactions; and every reaction makes multiple reactions and that makes change to happen so drastically that it is almost impossible to get a second chance the exact way. And Askling, mrgreen this isn't what you can call something difficult. All you need is logic and simple basic physics. 3nodding
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Posted: Sat Apr 21, 2007 10:07 am
I believe my brain is shut off or i'm just very confused redface
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Posted: Sun Apr 22, 2007 6:55 am
Of course, like I already said, the situation must be EXACTLY the same, on a smaller-than-molecular level. If that were the case, the same results would always happen since every state of energy and every force is the same.
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Posted: Sun Apr 22, 2007 9:02 am
This came up in my quantum physics class. The short version is that existance is fundamentally undetermined at an atomic level (see the Uncertainty Principle). But this carries over in small ways to the larger scale case, this means that even though we can calculate certain things very accurately we are in fact calculating probabilities and distributions as opposed to exact positions. (This is most easily seen in statistical and thermal mechanics when dealing with gases).
But even for bigger things quantum physics has an impact (normally it is so small we never notice it there, but it becomes very important when trying to do something like calculate the universe, or even everything inside a 1x1x1 foot box with absolute completness) For example according to quantum physics all matter has a wavelength, once you start viewing matter as a wavelength you are looking at it as a wave distribution rather than a set object, and "precise" calculations become impossible (you get really small error distribution instead) (link to page showing equations and history and experimental verification of what I am talking about http://en.wikipedia.org/wiki/De_broglie_wavelength)
In closing by doing things exactly the same way you can almost always get the same result (probably turn out the same way if you do it Grahms number of times http://en.wikipedia.org/wiki/Graham's_number), but there is always some degree of uncertainty in anything.
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Posted: Sun Apr 22, 2007 9:30 am
Don't you just love Graham, De Broglie, Schrodinger and my all time favorite, Dear ol' Heisenberg. I'm going to have to side here with calculating probabilities and with them physicists. Reminds me of a song though (yes I do watch anime): Quote: Sit back and listen to this song that I'm singin', Photon, Proton, Synchroton are interesting Science is better than love can ever be Falling in love is based on chaotic theory! Emotions are exhausting, Quantum mechanics never ever make you frown With scientific methods, Imaginary walls will come tumbling down, yeah! Rap- Listen, through his experiments, Heisenberg concluded that the accurate measurements of one of two related observable quantities, such as position and momentum, produces uncertainties in the measurements of the other. He figured that the product of the uncertainties of position and the uncertainties of momentum are equal to or greater than h over 2 pi, where h equals Plank's constant. It means that observations in quantum mechanics always lead to uncertainty. You understand this, don't you? It botters me that she says "h over 2 pi" Isn't it supposed to be "h over 4 pi"?
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Posted: Wed Apr 25, 2007 12:31 am
...and then there is the mind boggling thought that every moment and everything is happening right now - past present and future - so it is all set and expereinced being experienced and waiting to be experienced - we then only see and experience the moment that we are aware of so under this theory the coin will always land the same way xp -
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Posted: Wed Apr 25, 2007 2:29 am
Not exactly. The statement itself contradicts. However, Jad's theory does invoke curiosity for further research.
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Posted: Thu May 03, 2007 3:14 am
Wrong!!! xD
There are a number of quantums (little packets of energy) to be divised over a number of vibrator's (atom's molecules or sub atomic particles etc.)
Well there are numerous ways to divide the quanta and every division is equally possible; but some divisions can be accomplished in more ways than others and so they are more likely to occur.
Let's say that in theory its possible that a cup of tea starts boiling spontaneous, but the chance that will happen is so low it never occurs (cfr. winning the lotteries grand prize every week for 1.000.000 years, and even lower crazy low possibilities pirate )
There must be some truth in my crappy argumentation smile
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Posted: Thu May 03, 2007 7:03 am
Ndude Wrong!!! xD There are a number of quantums (little packets of energy) to be divised over a number of vibrator's (atom's molecules or sub atomic particles etc.) Well there are numerous ways to divide the quanta and every division is equally possible; but some divisions can be accomplished in more ways than others and so they are more likely to occur. Let's say that in theory its possible that a cup of tea starts boiling spontaneous, but the chance that will happen is so low it never occurs (cfr. winning the lotteries grand prize every week for 1.000.000 years, and even lower crazy low possibilities pirate ) There must be some truth in my crappy argumentation smile Some truth but you are missing the point. The Heisenberg uncertainty principle can be expanded a lot but in its simplest form it refers for position and momentum. In non-technical terms it means that the more precisly you know one quantity, the less precisly you can know the other one. The implication of this is that it is possible to know the initial state of any system. Since any future states depend on the "actual" current one you cannot really calculate the future form it. You can do probability distributions for the present state (I think this is what you were talking about with the quanta combinations) but this just lets you know the most likely present state (normally a range). Although for short term stuff you can be pretty accurate in the long term models for predicting complicated phenomena (like weather) tend towards chaos and innaccuracy. In reference to the initial statment made by elmon "There is a flaw in this reasoning: according to some scientists, there is a certain degree of chance on quantum level, but I take this as a lack of knowledge and understanding." You may be correct in that this is a lack of knowledge and understanding but correcting that would take a new theory which would disprove large portions of quantum physics (which despite making no intuitive sense does in fact have a huge amount of experimental and observational evidence to back it up). I think it is more likely that any theory that comes about which drastically broadens our horizons will not falsify what we already know but rather show the limits in conception of it (example would be Einstien's special relativity as an expansion on newtons laws of motion, technically newtons laws are wrong (they lack one term but it is so small as to be ignored unless objects are moving near light speed) I think any theory which disproves something with as much evidence as quantum physics would have a similiar agreement with the cases we have been able to observe so far.)
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Posted: Thu May 03, 2007 7:18 am
I'm not good at explaining things xD And I dont know much about this particular subject. Jad-Hoven Ndude Wrong!!! xD There are a number of quantums (little packets of energy) to be divised over a number of vibrator's (atom's molecules or sub atomic particles etc.) Well there are numerous ways to divide the quanta and every division is equally possible; but some divisions can be accomplished in more ways than others and so they are more likely to occur. Let's say that in theory its possible that a cup of tea starts boiling spontaneous, but the chance that will happen is so low it never occurs (cfr. winning the lotteries grand prize every week for 1.000.000 years, and even lower crazy low possibilities pirate ) There must be some truth in my crappy argumentation smile Some truth but you are missing the point. The Heisenberg uncertainty principle can be expanded a lot but in its simplest form it refers for position and momentum. In non-technical terms it means that the more precisly you know one quantity, the less precisly you can know the other one. The implication of this is that it is possible to know the initial state of any system. Since any future states depend on the "actual" current one you cannot really calculate the future form it. You can do probability distributions for the present state (I think this is what you were talking about with the quanta combinations) but this just lets you know the most likely present state (normally a range). Although for short term stuff you can be pretty accurate in the long term models for predicting complicated phenomena (like weather) tend towards chaos and innaccuracy. In reference to the initial statment made by elmon "There is a flaw in this reasoning: according to some scientists, there is a certain degree of chance on quantum level, but I take this as a lack of knowledge and understanding." You may be correct in that this is a lack of knowledge and understanding but correcting that would take a new theory which would disprove large portions of quantum physics (which despite making no intuitive sense does in fact have a huge amount of experimental and observational evidence to back it up). I think it is more likely that any theory that comes about which drastically broadens our horizons will not falsify what we already know but rather show the limits in conception of it (example would be Einstien's special relativity as an expansion on newtons laws of motion, technically newtons laws are wrong (they lack one term but it is so small as to be ignored unless objects are moving near light speed) I think any theory which disproves something with as much evidence as quantum physics would have a similiar agreement with the cases we have been able to observe so far.)
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Posted: Thu May 03, 2007 7:20 am
I just don't believe that there isnt anything like free choice etc... smile
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Posted: Thu May 03, 2007 4:20 pm
To record all the possible data on force, air pressure, etc., it would have to be done in a matter of seconds because the force of gravity will act upon it, leaving just that amount of time in order to calculate all the data.
If a device could be invented to do that, it would require years and years of studying, planning, obtaining all the equipment, etc.
Unless you could somehow freeze it into position as it falls, it would be near impossible to able to tell which side it will land on before it even falls. As I have said before, you would have less then at least 10 seconds, but the way you toss or flip the coin would affect the amount of time that will happen before it falls, raising even more complications.
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Posted: Thu May 03, 2007 9:34 pm
Ndude I just don't believe that there isnt anything like free choice etc... smile Actually that is what I am saying... You can't predict the future, so there is uncertainty. Which leaves room for free will, where as pure calculation and predetermination don't.
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Posted: Fri May 04, 2007 11:53 pm
flaw on the coin statement in the first post. flipping a coin will not always cause the same out come, there is a chance it will be heads, and a chance there will be tails. sure if you had all the data *some of wich would be impossible to collect* you might be able to "predict" the out come of the flip, but even then, flipping a coin using the same amount of force, the same everything *same situation 100% the same situation* and it landing on heads, then doing it again *with the same exact situation* you have a chance of getting tails meaning that the outcome wont always be the same.
also, if nothing is chance, and everything is basically predetermined, then anyone going into a surgery wehre teh outcome is 50/50 chance of survival is screwed, if even one person dies from teh surgery. so yeah flaws XP.
but yeah I believe chance does exist *as you can tell XP* but to each there own beliefs
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