I further understand that a good theory, according to Stephen Hawking, meets two criteria: "it describes a large class of observations with only a few arbitrary elements and it makes definite predictions about future behavior."
Thus, is it5 [sic] possible that patterns or correlations among events allow for prediction without requiring the identification or description of actual causal relationships among events.
Yet, is it true that science no longer assumes or needs to assume that events are caused?
If so, I suppose we could adapt our line of argument re rationality, reasons, infinite space and first cause. That is, we could define irrationality in terms of events which themselves are theoretically unpredictable in the sence [sic] of having no imaginable set of events which could precede them and thus predict them. In this case, the distinction between cause and prediction would mearely [sic] be formal, rather than substantive, distinctions for our purposes.
Please respond to me as to whether or not science still demands the functioning of causality. Also, what is an example of a cause which follows the event it produced?
Message 2
From: Jan Willem Nienhuys
Subject: Re: Is Causality Still in effect.
Organization: Eindhoven University of Technology, The Netherlands
Status: R
Seems to me that the idea of causes still apply. More precisely: investigation of repeatable or natural phenomena will look for causes as a default assumption. On the other hand, some quantummechanical phenomena seem to be uncaused. Maybe one should say:
if causality seems to fail, there had better be a good reason for it.
This shows that 'causes' only exist in the mind. By talking about cause and effect one actually is making artificial distinctions in what often is one process. More plainly: if you drop something, you may say that gravity is the 'cause' of the object temporarily being in a state of free fall at the same time as accelerating uniformly with respect to what you wish to consider as stationary. But strictly speaking gravity is not the cause, it is that phenomenon of falling itself. The 'cause' is you who let it go, or maybe a temporary dizziness and so on.
Message 3
From: Robert I. Eachus
with STANDARD_DISCLAIMER
use STANDARD_DISCLAIMER
Subject: Re: Is Causality Still in effect.
Organization: The Mitre Corporation, Bedford, MA
Three examples of causeless phenomena. The first two require equipment not available in most laboratories....
For the first, grab a rifle, hop in your spaceship and find a convenient rotating black hole. If you are careful in selecting your orbit, and the black hole is rotating fast enough, it is possible to fire a bullet on a trajectory which will return to your spaceship before you pull the trigger. While you are loading your rifle, a bullet spanges into the back of your spaceship...
For the second choose the smallest black hole you can find. "Quantum" size preferred, but any size will do. Observe the particles apparently emitted by the black hole. What you are seeing is one of a pair of virtual particles created at random from the vacuum, where the partner fell beyond the event horizon before they could recombine. Notice that although there are no cause/effect paradoxes here, the paticles [sic] appear from nowhere without cause.
The third experiment has actually been performed, the EPR "paradox." Einstein didn't believe this could be true, and used it as an argument against Quantum Mechanics. "God does not play dice with the universe," says Einstein. "Yes, he does, and he does it where he can't be seen..." says the EPR experiment.
It works like this, create a pair of particles such that two properties (usually spin in two directions) are the same for both particles, but only one of the properties can be measured. Now separate the two particles by some distance so that the particles cannot interact. Quantum Mechanics says that if you attempt to measure the same property for both particles, you will succeed, if you try to measure different properties, the attempt will fail.
Although you can't transfer information faster than the speed of light with this mechanism, if you make the decisions on which measurements to make at different times and distances (the experiment is usually performed with the two particles flying apart at the speed of light), the quantum machanical [sic] result still holds. Although this experiment is not as dramatic as the others, the result is the same as the first experiment, in that the effect is measured before it is caused.
Welcome to the perplexities of modern physics. Two good books describing this are "The Dancing Wu Li Masters" and "The Tao of Physics." If you have a good model for any of lots of things which doesn't depend on cause and effect, let us all know, because cause and effect is only a local approximation, and not a very good one at that...it is difficult to reason when rules start: First throw out all the rules of logic!
Message 4
From: Brian Donat
Subject: Re: Is Causality Still in effect.
Organization: Informix Software Inc., Menlo Park, CA.
Summary: I hope so.
>6
>Regarding the question of causation ....
>... treatise on the existance of God and the universe. ....
>
Jim,
Your whole posting approaches this question based on rationalizations in a "historical" context. And there, you'll find your most valuable insight.
I might further assume that your question requires an answer (for yourself) which would be determinate of 'where', things will lead to next (specifically within the framework of 'science' (it's [sic] abilities to 'predict' physical behaviors)).
However, perhaps you might garner some further insight from the discussions some folks are having regarding 'chaos theory' - regarding artificial intelligence and human cognizance, philosophy, etc.. And should you get yourself into those weeds, and as you start thinking about 'chaos', how about considering for a minute, that 'science' is not alone in the universe of human 'expression', but that even as Einstein came up with the 'the theory of special relativity', socially, we all started saying "it's all relative", and the next thing anybody knew, we ended WWII in a major way and started a silent but deadly race. I guess these were 'effects', but having stated so, merely scratches the surface, when one considers where all those dominos really fell.
But I digress ... perhaps I had to? ...
>Yet, is it true that science no longer assumes or
>needs to assume that events are caused?
Perhaps it still has (needs) to? ...
>If so, I suppose we could adapt our line of
>argument re rationality, reasons, infinite space
>and first cause. That is, we could define
>irrationality in terms of events which themselves
>are theoretically unpredictable in the sence [sic]
>of having no imaginable set of events which could
>precede them and thus predict them.
Take as much imagination as you need; it's really not such a dangerous thing afterall.
And BTW, you probably couldn't have done otherwise anyway (No that's not fatalism).
If you were a meteorologist and had to predict tomorrow's weather, just how would you? And what use would science be to anyone if it wasn't concerned with making predictions and having 'faith' in its rules for making those predictions?
Message 5
From: Peter Hahn
Subject: Re: Is Causality Still in effect.
Organization: Network Systems Corporation, Mpls., MN.
In article >[ by the writer of Message 3 above]
>Three examples of causeless phenomena. The
>first two require equipment not available
>in most laboratories....
>For the first, grab a rifle, hop in your
>spaceship and find a convienent rotating
>black hole. If you are careful in selecting
>your orbit, and the black hole is rotating
>fast enough, it is possible to fire a bullet
>on a trajectory which will return to your
>spaceship before you pull the trigger. While
>you are loading your rifle, a bullet spanges
>into the back of your spaceship...
Let me see if I have this straight.
Like a stage magician, I take the bullet and carve my initials in it.
I now pick up the the [sic] bullet in my left hand, and the rifle in my right hand.
As I am loading up my rifle, the bullet spangs into the back of my spaceship, and say, for the sake of argument, kills me stone dead.
With an unloaded rifle still clutched in my right hand, right? And the bullet in my left hand. And the bullet also between my eyes.
And both bullets with my initials carved in them, right?
Do I understand this right, or have I missed something obvious? Apologies in advance if I misunderstood something.
I'll probably be sorry I asked, but how was mass conserved when the second copy of the bullet was "created", if "created" is the right term.
I know the real answer to my questions doubtless requires math that I wouldn't understand anyway. But I would sure appreciate someone dumbing this one down for me a just a little bit more.
Message 6
Subject: Re: Is Causality Still in effect.
>And what use would science be to anyone
>if it wasn't concerned with making
>predictions and having 'faith' in its
>rules for making those predictions?
>by the writer of Message 4 above
And scientists reverently intone their "sacred truths" seemingly oblivious to the fact that-as James Burke has convincingly illustrated in his excellent PBS television series for mere lay mortals, "The Day the Universe Changed"-the rules have changed every fifty years or so for as far back as anyone can trace the history of science. In contrast, as Mr. Burke pointed out in the last program of his series, the basic truths of Buddhism have not changed in nearly 3000 years. So who is buying "pie in the sky" afterall?
Alan
Message 7 (by the writer of Message 4)
From: Brian Donat
Subject: Re: Is Causality Still in effect.
Organization: Informix Software Inc., Menlo Park, CA.
Summary: Imagine
Reference: Message 5 above.
>Three examples of causeless phenomena.
>The first two require equipment not available
>in most laboratories....
>For the first, grab a rifle, hop in
>your spaceship and find a convenient rotating
>black hole. If you are careful in selecting
>your orbit, and the black hole is rotating
>fast enough, it is possible to fire a bullet on
>a trajectory which will return to your spaceship
>before you pull the trigger. While you are loading
>your rifle, a bullet spanges into the back of
>your spaceship...
As I said,
Take as much imagination as you need; it's really not all that dangerous afterall ....
Clue #1 that causality is involved: Somebody had to be there loading a bullet to 'initiate' the proposed sequence of events, regardless of the fact, that the author of this example claims it to be 'uninitiated'.
Clue #2: Has anybody got a black hole they care to share with the rest of us? Or shall we say that a theoretical object is merely 'imagined'. Then, there is indeed a paradox here. The paradox regards what our logic and mathematics allow us to predict as 'true', but for what we have no 'objective' proof of. In other words, logic and math do have roots in the 'subjective' and hence some of what logic and math describe may NOT7 have 'real' counterparts.
MY GOSH! It's my understanding that astronomers haven't even found a single brown dwarf, in their quest to prove the source of the observed 'missing mass' in the universe.
>For the second choose the smallest black
>hole youu [sic] can find. "Quantum"
>size preferred, but any size will do.
>Observe the particles apparently emitted
>by the black hole. What you are seeing
>is one of a pair of virtual particles
>created at random from the vacuum, where
>the partner fell beyond the event horizon
>before they could recombine. Notice that
>although there are no cause/effect paradoxes
>here, the particles appear from nowhere without
>cause.
As I said,
Take as much imagination as you need; it's really not all that dangerous afterall ....
Clue # 3: Please refer back to Clue #2.
>The third experiment has actually been
>performed, the EPR "paradox." Einstein
>didn't believe this could be true, and
>used it as an argument against Quantum
>Mechanics. "God does not play dice with
>the universe," says Einstein. "Yes, he
>does, and he does it where he can't be
>seen..." says the EPR experiment.
The EPR experiment supposedly concludes,
"Yes, he does, and he does it where he can't be seen..."
It seems to me, that we need somebody to step forth at this point, whose imagination is equal or better to that of Einstein's, and within a wink of an eye, belay this controversy, by of course, revealing it's true causality.
>It works like this, create a pair of
>particles such that two properties (usually
>spin in two directions) are the same for
>both particles, but only one of the
>properties can be measured. Now separate
>the two particles by some distance so that
>the particles cannot interact. Quantum
>Mechanics says that if you attempt to measure
>the same property for both particles, you will
>succeed, if you try to measure different
>properties, the attempt will fail.
>Although you can't transfer information
>faster than the speed of light with this
>mechanism, if you make the decisions on
>which measurements to make at different
>times and distances (the experiment is
>usually performed with the two particles
>flying apart at the speed of light), the
>quantum machanical [sic] result still
>holds. Although this experiment is not as
>dramatic as the others, the result is the
>same as the first experiment, in that the
>effect is measured before it is caused.
So here's how it works....
At some point in time, (T1), physicist (PA), initiates process (@P) using the appropriate equipment, such that from a source mass, two particles (! and ?) are created. (PA) then, using whatever device he has available, continues (@P) through successive (Tx) such that (! and ?) rapidly move apart, and while this is occurring (PA) attempts to make an 'observation' with whatever measuring equipment is available to him at (Tx + n).
We again have clues similar to clues #1 and #2 above, that causality is still alive and well.
1st: It is an unavoidable fact that (PA) can 'initiate' his experiment at a specific temporal locus (T1), such that he can assure himself of success, regarding his observations at (Tx + n). It appears sound reasoning that should (PA) not initiate (@P) at (T1), the observations at (Tx + n) have no guarantee of success. Hence, we conclude that (PA) is the root cause of whatever is observed at (Tx + n). This is by far more 'rational' that what occurs in the first example with a bullet. I'll keep it [in] mind that in this case observations are duplicatable, but in the case of black holes, nobody as of yet has made any observations at all. Hence, I have little faith in black holes.
2nd: It has been admitted that observations had been made successively under the same scenario, however, and it has likewise been admitted that what was observed conflicts with what was predicted as an outcome, but that the observation was always the same. Therefore, we must conclude, in agreement with what was stated about Clue #2 above, that the 'rules', mathematical or logical or otherwise, which were used to make the prediction must somehow be inherently wrong, but (and this is important) that this in no way denies causality. As Newtonian Physics collapses before quantum physics, so, there's something about our rules in Quantum Physics that may yet surrender to a higher order set of 'rules' for making predictions about this particular species of observation.
3rd: It is my observation, that at least two of the examples given regard 'gravity' and to my knowledge, there is still no 'solid' connection in quantume [sic] physics between gravity and the particle physics of 'energy'. We have an open ballgame here and anybody's guess might just lead to the right answer regarding the particular 'rules' for predicting outcomes in those cases. However, the 3rd example remains interesting in that it, escapes this quandary, by remaining bound up with particle species which it was stated fall under the realm of quantum physics but in this case, defy prediction by it's 'rules'. This leads us back to the 2nd thing talked about above, that we may not have things tacked down with Quantum Physics alone and a higher order set of 'rules' is required to define predictable outcomes regarding not only this case, but also gravity.
4th: We have a problem with the 'measuring equipment' available to (PA) at (Tx + n). Because we do not fully understand the observation because it conflicts with Quantum rules, we exacerbate the problem. We haven't a clue as to 'what' measuring device should be used, because we have little to hint as to what really happened, because our mathematics failed under the circumstance, except that it recurs and conflicts with our prediction. The cheap shot, is to deny however, obvious causality.
I have seen no reason, yet, to deny causality.
Message 8 (by the writer of Messages 4 and 7 above)
From: Brian Donat
(SAME) Subject: Re: Is Causality Still in effect.
Organization: Informix Software Inc., Menlo Park, CA.
Summary: Discrete Macro Events vs. Micro Events w Multiple Influences
Regarding the ongoing discussion on causality:
(M) -> ( ) -> (! and ?)
There is a 5th, reasoning which I neglected to mention in the previous post because it deserves its own space.
5th, This regards the difference between Macro Events-observed as discrete, and micro events on such a scale, that conditions of causality which influence its behavior are simultaneously 'universal' in nature.
What the hell does that mean?
OK. It means this.
On a macro scale, a causal event which influences Object A (Oa) to behave in any predictable manner allows a higher degree of predictability, and secondarily 'measurability' because the set of 'influences' and their expressions are limited to those which specifically influence (Oa) on the macro scale. Or more specifically, a macro event, usually results from one or a limited number of macro causes, such that the 'plenum' of other causes which are always present, have little effect in altering the outcome. The observer would normally discard the micro effects and base observations on the macro scale activity. This works fine for bullets, apples and oranges.
On the contrary, a micro event on the scale of the smallest currently predictable Quantum species, may no longer behave as if it involved a discrete entity, because the set of influences and their expressions include 'all' possible 'influences' at that scale. This doesn't necessarily preclude the possibility of consist[ent]ly producing the same observations from the same initial conditions because indeed, we are still talking causality. However we're talking about causality in a way, such that the causal influences become unlimited in number.
This would preclude being able to make observations of the 'what' that goes on during the process initiating the observation, provided that the observation did not keep track of all incidentals effecting the outcome. I would suggest, that no tool currently exists for making such observations where all the incidentals are indeed kept track of.
Matter of factly, a paradox occurs, in that the observation itself would act as a cause in the event and therefore would alter it's ultimate outcome. Predictability is lost and can never be had at this point.
In other words, there is a limit at which observations of the discrete particles being studied by themselves is no longer sufficient, but that the outcome is the product, not just of the mass of the product and its source(s), but of ALL the incidentals as well.
However, I suppose that it would never be quite that severe. Afterall [sic], if you can observe a discrete species, it must in itself be of such a nature that it does have some limited number of other species which may effect it. What may be true however, is that just below this is a level where constituent species are all equal and cannot be distinguished amongst each other.
Mathematically, we would have a condition in which the 'unit' fails to be recognized, because it exists in a state where causal influences from other 'like' units are at such an extreme that measuring them has no meaning. Just above this however, the first definable species would consist of objects which occur as events at a scale above this meaninglessness, such that they are recognizable against simultaneous expressions of similar objects at the same scale. This pattern of recognizable species generation would eventually manifest itself in such familiar macro objects as bullets, apples and oranges.
We might somehow infer that as such events become 'directed', their existence at larger scales becomes more and more secure, such that they are propagated through time.
Now the question is, can a physicist (PA) initiate a process (@) such that a mass (M) can make the following transistion:
(M) -> ( ) -> (! and ?)
where ( ) represents the condition where the constituents of (M) express themselves temporarily in a state where the 'unit' is no longer recognizable and therefore meaningless and (! and ?) are recognizable quantum species, but are not the species which were predicted for the given process?
This would represent the exact opposite of securing an object's identity over time via it's [sic] being more 'directed' in it's [sic] expression. The object regresses to a state of 'no discernable direction' and 'no discernable expression'. Ipso facto, we get NOTHING. But this is unreasonable at best.
Secondarily, does a transition through this state deserve the status of defeating causality?
What are the rules, by which (M) -> ( ) -> (! and ?) w/o defying the law of conservation of energy? Does the total expression of ( ) somehow ALWAYS bring things back to a state where
(M) = (! and ?) + e?
ALWAYS?!
This is more reasonable that just getting NOTHING. We just think we had nothing; it comes back from nothing as something else. It's expression was momentarily taken up, by everything else, at the level of meaninglessness, but was returned as something meaningfull at (Tx +n).
Philosophically then, one should be able to predict that there is a constant extant in the universe which defines the total level of 'meaningfullness' and that like the law of conservation of energy, this never changes.
Wow! Blow that one through the tree-branches a couple times!
It might well be that 'gravity' is the expression of this constant as 'force' such that 'gravity' is not particulate in nature, but instead, is the thing which maintains stasis in the level of meaningful expressions above the level where the 'unit' is no longer recognizable. There would then be no math to describe this except in terms of 'gravitational effect'.
Well so much for now; many of you probably think I just puked up a pile of hogwash anyway.
It came to me in a dream.
As I said,
Take as much imagination as you need; it's really not all that dangerous afterall ....
BRIAND