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hamia

 

Posts: 403
Joined: Jun. 25 2004
 

RE: Black Hole eats sun (in reply to Ricardo

quote:

ORIGINAL: Ricardo

However, there are some important uses for general relativity. One off hand is GPS which is corrected for Einsteins GR, curved space of the earth, helps my wife pinpoint my location at all times with her iphone....gee thanks einstein!!!



Heisenburg helps you out here - so you're good.
  REPORT THIS POST AS INAPPROPRIATE |  Date Jan. 15 2013 2:15:40
 
Richard Jernigan

Posts: 3430
Joined: Jan. 20 2004
From: Austin, Texas USA

RE: Black Hole eats sun (in reply to Ricardo

quote:

ORIGINAL: Ricardo

quote:

The navigator doesn't worry about the third dimension when locating points on the surface of the ocean. He just thinks about latitude and longitude.


Tell that to the navigators in the movie "Core".


I am old enough to have learned celestial navigation as an amateur mariner. Celestial navigation didn't come into general use until it was reduced to a procedure for drawing lines on a paper chart. In my experience, and that of my friends with far more voyaging under their keels than I, the mariner does indeed identify the surface of the ocean very closely with his paper chart. This holds true even now, when "navigating" for most amateur mariners means reading latitude and longitude off their GPS and marking it on the chart.

quote:



Well, as far as curved space, we can tell it's curved by another way other than only gravity effects. Light bending (gravitational lensing) shows space curving 3D optically, again no "need" for a 4th dimension and higher math. But the point of the Sagan analogy was not so much for general relativity purposes (curved space do to mass, though he does mention it) so much as for the LARGE scale structure of the universe and the implications of the Big Bang theory and other cosmological concepts....because as it stands the balloon analogy by itself sucks. It's like showing a flat map of the earth with longitude and latitude as you describe to a young child and say "there is the earth in 2D, GET IT KID????". The child is better off with a GLOBE to get the true picture of what navigating the earth will REALLY be like.


To get an idea of the shape of the earth, and the idea of great circle distances, the globe is indeed the best tool. But navigation in practice is still done with paper charts, or even more abstractly with computer based systems.

RNJ
  REPORT THIS POST AS INAPPROPRIATE |  Date Jan. 15 2013 3:19:08
 
estebanana

Posts: 9351
Joined: Oct. 16 2009
 

RE: Black Hole eats sun (in reply to hamia

So what I'm getting out of this whole exchange is that essentially for the purpose of moving around the earth, the world is flat. And spherical the same time.

A metaphor for a paradox. Roll that in your Mercator Projection and smoke it.

_____________________________

https://www.stephenfaulkguitars.com
  REPORT THIS POST AS INAPPROPRIATE |  Date Jan. 15 2013 4:12:09
 
Richard Jernigan

Posts: 3430
Joined: Jan. 20 2004
From: Austin, Texas USA

RE: Black Hole eats sun (in reply to guitarbuddha

quote:

ORIGINAL: guitarbuddha

quote:

ORIGINAL: Richard Jernigan



How do we make a sphere without going into the third dimension?


But it could give the mistaken impression that an additional dimension is required to generate a curved space.

RNJ


Hi Richard, my name is David.

I know the following might seem glib but I think it is relevant to your argument.
The 'we' in question above is 'we humans' right ? We experience the world in three dismesions already, it is very difficult for me to imagine that any adult mind does not have ready and unavoidable recourse to three dimension.


It would be more accurate to say, "We mathematicians." Humans indeed perceive things in 3-D, though not all in the same way. On the island of Bali, and in present day Hawaii, instead of north/south and east/west people use "toward the mountains" ("kaja" in Bali, "mauka" in Hawaii, "toward the ocean" ("kelod" in Bali, "makai" in Hawaii), and "left/right when facing the mountains". So when driving north from Honolulu to the North Shore on Oahu, at some point your direction changes from mauka to makai. People use these words in Hawaii when speaking English.

But as far as we mathematicians go, we are (or should be) very careful about the ingredients we use to build up a concept. I was just pointing out that mathematically you don't need three dimensions to build up a curved 2-dimensional space.

quote:



I think that geometry itself IS the analogy that we use to model three dimensional space. Certainly our nerve synapses propagate in three dimesion so I see no reason to assume that our brain has any need to use the tricks that our geometry uses to represent space in 2D. In much the same way we are not really limited by the digital nature of our arithmetic as we can store amounts both as integers and irrational estimates/impressions since our brain is analog.

I suspect that our analogies (such as our mathematics arithmetic geometry etc etc ) ARE limited by our brain architecture.

Using geometry we can cumbersomely calculate snapshot answers to problems which we have been solving in real time since before the emergence of our species. Problems like 'how large is that object in the distance' ?, 'at what speed should I move my hand to intercept that moving ball' .

We can steer out two dimensional tools to model and imitate the ways in which we solve these things intuitively. We can do this because we have visceral understanding of a readily perceived three dimensional space.

The insights which we wish to develop about other dimensions are likely to be much more difficult to envisage since we cannot steer in four or more dimensions with the confidence that we can in two and three.

And we were always in three.

Just a though, clumsily developed.

D.


You raise issues that interest me greatly. My mathematics teachers emphasized that mathematics was a creative endeavor, and worked hard at teaching their students to be creative. But to a person with a strong interest in physics the question arises, "Why is mathematics so effective in physics?"

I think your ideas point toward an answer. How much of mathematics is grounded in reality, and how much of it is the work of human creativity? Thirty years ago, experiments with cats showed that presenting a line segment anywhere in the visual field caused certain neurons in the visual cortex to fire. Changing the orientation of the line segment caused different neurons to fire. One could conclude that the mammalian brain is hard wired to recognize line segments and their orientation. Thus one may suppose that these mathematical concepts have a basis in the structure of the brain. It's not a very big step to hypothesize that many other mathematical concepts are rooted in brain architecture, which has been adapted by evolution to deal efficiently with its surroundings.

But is the 4-dimensional space of General Relativity, or the infinite-dimensional Hilbert Space of quantum mechanics based on brain architecture? It would greatly surprise me if this were true. For most people it takes weeks or months of study and drill to get familiar with these abstract spaces.

Still, when solving problems in these abstract spaces, which can involve months or years of struggle, there is an intense feeling of discovery when the solution is seen. Sometimes this feeling of discovery occurs even before the logical proof of the solution has been worked out. You just know you have it, and the details will follow.

Where does this sense of discovery come from, when dealing with things that are clearly the work of human creativity?

The immense mathematical superstructure required by physics has been put together by creative minds over centuries of work. The idea of a mathematical limit was developed geometrically by Eudoxus in the 4th century B.C., but not stated with logical precision for numbers until Cauchy in the 19th century A.D.

The parts of mathematics that are useful in physics have often been developed in response to physical problems, but not always. The theory of groups is a great aid to the sudy of particle physics, yet its development began largely as a pure intellectual exercise. The great revolution of quantum mechanics was mightily assisted by mathematics developed decades earlier in the study of mechanical vibrations.

Why do we have these marvelous coincidences?

I find these ideas and questions fascinating. I doubt that I will ever come to a final conclusion.

RNJ
  REPORT THIS POST AS INAPPROPRIATE |  Date Jan. 15 2013 4:13:48
 
guitarbuddha

 

Posts: 2970
Joined: Jan. 4 2007
 

RE: Black Hole eats sun (in reply to Richard Jernigan

quote:

ORIGINAL: Richard Jernigan


It would be more accurate to say, "We mathematicians." Humans indeed perceive things in 3-D, though not all in the same way. On the island of Bali, and in present day Hawaii, instead of north/south and east/west people use "toward the mountains" ("kaja" in Bali, "mauka" in Hawaii, "toward the ocean" ("kelod" in Bali, "makai" in Hawaii), and "left/right when facing the mountains". So when driving north from Honolulu to the North Shore on Oahu, at some point your direction changes from mauka to makai. People use these words in Hawaii when speaking English.




And apparently some tribes have been found in the amazon who had no concept of left and right. Certainly our brain is a computer the substance of which is altered by the software running on it. I realised yesterday that there could be an argument made that the 'consciousness'(our human verion of windows) may abstract brain architecture to 2D. Like a subway map. I am gratified that you did not make this point as it would be awfuly difficult to disprove and maybe impossible to prove.

The coordinate systems we choose may effect the brains architecture in some minimal ways I doubt that the effect the nature of the human involved as long as that individual was part of a reasonable large group.

I think that it is as reasonable to assume that modelling to lower dimensions is fruitful then modelling to higher could also be. However the lack of low hanging fruit in string theory may be as a result of a failure of human imagination. We play chess, use tables and write. 2D is easy for us. The activities which we are conscious of participating in in 4D would be the store of readily assimilated metaphors that would aid us in designing a mathematics which gives us a semblance tactility and intuition in solving pandimensional problems and moving on to prediction.

The eureka moments that you are talking about are, I suspect, the result of such a metaphor being found in the subconscious brain of a focused mathematician. Found yet not yet consciously explained. Perhaps if a mathematical grammer is found which makes this metaphor clear ( in the way that drawing an architectural plan or a graph on cartesian axis does ) then some more low handing fruit may be found in string theory.

Mathematics only has the reality with which we imbue it. We are pathalogical pattern finders (genetecists suggest that this predeliction was developed to predict the behavor of our peers as we compete for resources). There is nothing surprising about finding or capitilising on what we see emerge in mathematics. No more so than as a child I remember randomly drawing a few lines on a page and then trying to use them as the impetus to 'find' an image.

In the book Geudel Escher Bach there is a fascination case of deriving common mathematical operators from seemingly unconnected rules. Why was this possible,because WE looked for them !!!! HARD and because there is nothing behind maths other than humanity, it is our plaything.

I also find coincidence fascinating. But I fight hard against descent into spiritualism or numerology. I try and keep it clean ( and of course I fail but I do try).

Sometimes I FEEL maths around me (I have a peculiar mechanical synesthesia) and it is good but I know its really just me. Me and the thousands of generations of previous humanity on whose shoulders we all have the privelage of standing

D.
  REPORT THIS POST AS INAPPROPRIATE |  Date Jan. 15 2013 10:47:26
 
hamia

 

Posts: 403
Joined: Jun. 25 2004
 

RE: Black Hole eats sun (in reply to guitarbuddha

quote:

ORIGINAL: guitarbuddha

In the book Geudel Escher Bach there is a fascination case of deriving common mathematical operators from seemingly unconnected rules. Why was this possible,because WE looked for them !!!! HARD and because there is nothing behind maths other than humanity, it is our plaything.



Not necessarily true. There could be aliens somewhere out in space with the same or similar mathematics.
  REPORT THIS POST AS INAPPROPRIATE |  Date Jan. 15 2013 12:25:05
 
BarkellWH

Posts: 3458
Joined: Jul. 12 2009
From: Washington, DC

RE: Black Hole eats sun (in reply to hamia

quote:

quote:

ORIGINAL: guitarbuddha

In the book Geudel Escher Bach there is a fascination case of deriving common mathematical operators from seemingly unconnected rules. Why was this possible,because WE looked for them !!!! HARD and because there is nothing behind maths other than humanity, it is our plaything.



Not necessarily true. There could be aliens somewhere out in space with the same or similar mathematics.


If there were aliens in some distant world in the universe who had developed sufficiently to question the fabric of the Cosmos and were at a high enough intellectual level to run experiments and do the math, they would have to have an understanding of the same mathematics and physical laws of General and Special Relativity, as well as Quantum Mechanics, as we Earthlings if they were to understand it. It could not be otherwise, because they and their world, as a part of the same space-time framework of the universe as we and ours, would be subject to the same laws of physics, including Relativity and Quantum Mechanics, as we are.

Cheers,

Bill

_____________________________

And the end of the fight is a tombstone white,
With the name of the late deceased,
And the epitaph drear, "A fool lies here,
Who tried to hustle the East."

--Rudyard Kipling
  REPORT THIS POST AS INAPPROPRIATE |  Date Jan. 15 2013 13:42:18
 
guitarbuddha

 

Posts: 2970
Joined: Jan. 4 2007
 

RE: Black Hole eats sun (in reply to BarkellWH

I will be glad to compare alien maths with human maths if someone would be so kind as to translate.

The assumption that any possible alien intelligence would have similar sensory apparatus to ours would lead naturally to the conclusion that they would model the universe in similar ways to humans.

You know James T Kirk was always able to speak to them so bearing that in mind you must be right. Maybe I never made enough assumptions.
  REPORT THIS POST AS INAPPROPRIATE |  Date Jan. 15 2013 14:17:07
 
Ruphus

Posts: 3782
Joined: Nov. 18 2010
 

RE: Black Hole eats sun (in reply to Richard Jernigan

quote:

ORIGINAL: Richard Jernigan

Thirty years ago, experiments with cats showed that presenting a line segment anywhere in the visual field caused certain neurons in the visual cortex to fire. Changing the orientation of the line segment caused different neurons to fire. One could conclude that the mammalian brain is hard wired to recognize line segments and their orientation.


Considering myself, I wonder whether this could apply to mammals as such. ( Release me in an unfamiliar city without permission to ask around and I´ll be lost. Let alone if pulled into a pub, filled with a pinch or two, turned around and kicked back out into the street.)
Cats seem a selected example with their special ability of orienting on landmarks ( nearing abilities of specialized birds).
My internal GPS on the contrary seems to have been written with Win95 code.


quote:

ORIGINAL: guitarbuddha

Sometimes I FEEL maths around me (I have a peculiar mechanical synesthesia) and it is good but I know its really just me. Me and the thousands of generations of previous humanity on whose shoulders we all have the privelage of standing

D.


Maybe even including evolution.
Math prodigies appear to not intellectually calculate ( and how could they) but intuitively process. Looks as if there existed ways of literally mathematical thinking. ... Which again ... as comes to mind while talking ... makes you remotely wonder whether thinking could be just based on 0 and 1, like computing.

Imagine, all just diggits, even organically based mental processings. ( Yes, I know ... Didn´t mean to call anyone mental! )
0 and 1 in the end as origin of the big bang.

Finally, an answer for clinching superstitious and their mantra question of what´s been preceding the bang!
There were a zero and a one colliding, folks.
-

Forgive me the spoiling with my superficial understanding of cosmic matters. ( Seriously.)

Ruphus
  REPORT THIS POST AS INAPPROPRIATE |  Date Jan. 15 2013 15:13:55
 
Leñador

Posts: 5237
Joined: Jun. 8 2012
From: Los Angeles

RE: Black Hole eats sun (in reply to hamia

quote:

Finally, an answer for clinching superstitious and their mantra question of what´s been preceding the bang!
There were a zero and a one colliding, folks.


I agree with Ruphus, 0's and 1's colliding is what makes babies so why not the universe.

_____________________________

\m/
  REPORT THIS POST AS INAPPROPRIATE |  Date Jan. 15 2013 15:28:02
 
Doitsujin

Posts: 5078
Joined: Apr. 10 2005
 

RE: Black Hole eats sun (in reply to hamia

GUI = 10

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  REPORT THIS POST AS INAPPROPRIATE |  Date Jan. 15 2013 16:54:41
 
Richard Jernigan

Posts: 3430
Joined: Jan. 20 2004
From: Austin, Texas USA

RE: Black Hole eats sun (in reply to BarkellWH

quote:

ORIGINAL: BarkellWH


If there were aliens in some distant world in the universe who had developed sufficiently to question the fabric of the Cosmos and were at a high enough intellectual level to run experiments and do the math, they would have to have an understanding of the same mathematics and physical laws of General and Special Relativity, as well as Quantum Mechanics, as we Earthlings if they were to understand it. It could not be otherwise, because they and their world, as a part of the same space-time framework of the universe as we and ours, would be subject to the same laws of physics, including Relativity and Quantum Mechanics, as we are.

Cheers,

Bill


Ummm....I beg to differ. Even among humans there are radically different approaches to certain mathematical concepts. For example, Leibniz embraced the use of infinitesimals--qantities less in magnitude than any real number, but still not zero. Newton flirted with them, but abandoned them for fluxions, the limits of varying quantities. Cardinal Newman bitterly opposed Newton, accusing him of promoting atheism. After Newton was dead, no longr able to defend himself, Newman ridiculed infinitesimals as "the ghosts of departed quantities". Newman purported to demonstrate contradictions using infinitesimals. Newton never fell into this error. But mathematicians were stung by Newman's criticism and abandoned infinitesimals. Cauchy is credited with the first logicaly precise definition of limits for numbers, published in the 19th century. Absent infinitesimals, the limit concept has been the foundation of mathematical analysis.

But, lo and behold, in the 1960s comes Abraham Robinson, who demonstrated that there is a logically consistent mathematics employing the real numbers and infinitiesimals. In Robinson's work you can add up infinitely many infinitesimals and get a finite number, just as Leibniz did. But nobody uses Robinson's stuff, since so much work was already based on the other approach. Who knows where Robinson's infinitesimals may have led, if as much work had been devoted to them by aliens?

In another branching, the Dutch mathematician Brouwer, in the early 20th century, founded a school called Intuitionism. Brouwer objected to such things as proving the solution to a differential equation exists, without giving a procedure for calculationg it. Unfortunately this approach eliminates large swaths of otherwise accepted mathematics. What if the aliens were Intuitionists, and found ways to work around the difficulties this introduces?

Another ambiguity arises from the proof, again in the 1960s, that the Axiom of Choice is independent of the Zermelo-Frankel axioms of logic. This gets a little technical, but just as you can have Euclidean and non-Euclidean geometries, you can have logic with or without the Axiom of Choice. Adopting the Axiom of choice leads to some bizarre results. See the Banach-Tarski Paradox. Before the independence of the Axiom of Choice was known, its appeal was so strong that such a great mathematician as R. L. Moore referred to it as "that fact". Much of Moore's work in the foundations of topology depended upon the axiom of choice. Which road would the aliens take?

A fundamental unsolved problem of Earthling physics is that quantum mechanics and gravitation are incompatible in an essential way. You can use General Relativity to investigate gravitational effects, and you can use quantum mechanics to investigate subatomic and other phenomena, ignoring gravity, but you can't combine the two in a mathematically compatible way. Some new fundamental insight is required.

String theory can unite gravity and particle physics--- in theory. But its predictions are untestable within the limits on the energy available to our most powerful tool, the Large Hadron Collider. The best hope is that at full power the LHC may give evidence of the massive partners of the particles of the Standard Model predicted by supersymmetry. If it does not, string theory remains unconstrained and unverifed by experiment. What if the aliens go straight to the unified theory of gravitation and subatomic particles, and it turns out not to look very much like either quantum mechanics or General Relativity?

Moore's method of teaching mathematics was devoid of lectures and the reading of reference works. It consists of a brilliantly constructed sequence of problems that students were expected to work out on their own. Amyone who has employed this method in their own teaching will have been impressed by the originality of their students. Valid proofs of well-known theorems differ wildly among students who are thrown upon their own resources.

Mathematics is a creative art. The path that humanity has followed in trying to understand nature is not the only one we could have taken, nor is it one that an alien civilization is required to follow.

RNJ
  REPORT THIS POST AS INAPPROPRIATE |  Date Jan. 16 2013 6:03:53
 
BarkellWH

Posts: 3458
Joined: Jul. 12 2009
From: Washington, DC

RE: Black Hole eats sun (in reply to Richard Jernigan

quote:

Mathematics is a creative art. The path that humanity has followed in trying to understand nature is not the only one we could have taken, nor is it one that an alien civilization is required to follow.


But it is the path that has led us to a pretty good, fundamental understanding of nature. Someone may yet come up with the Unified Field Theory, that elusive "Theory of Everything" that Einstein, and others, have sought. But if someone does, I suspect it will be within the framework of mathematics and physics as we currently understand them. Or, perhaps, an extension of the framework of mathematics and physics as we currently understand them. I may be wrong, but I don't think it will come about via an overturning of our understanding of the mathematical and physical framework that, to date, works very well in explaining the universe of space-time.

That there may be other approaches, some of which you elegantly described, is undeniable. Nevertheless, none of them has led us to the level of understanding that we have achieved to date. I suspect that is for a reason, the reason being that it is our approach that has provided the key to understanding the Cosmos, from Relativity to the Quantum World. I grant the possibility that an alien civilization MIGHT reach an understanding via a very different approach, but I don't think it likely. Thus, I think you overstate the case when you claim categorically that our path "is not one that an alien civilization is required to follow," in order to reach an understanding of the Universe.

Cheers,

Bill

_____________________________

And the end of the fight is a tombstone white,
With the name of the late deceased,
And the epitaph drear, "A fool lies here,
Who tried to hustle the East."

--Rudyard Kipling
  REPORT THIS POST AS INAPPROPRIATE |  Date Jan. 16 2013 11:26:41
 
XXX

Posts: 4400
Joined: Apr. 14 2005
 

RE: Black Hole eats sun (in reply to hamia

Objectivity is in the objects. Any form of science, human or alien, has to find out the objectivity of a certain thing. This is constant for all objects and doesnt change only because the spectator changes. There exist numerous explanations of nature processes. Each of them is correct and an alien species would come to similar explanations. There are certain highly specialized fields where there is no contemplary knowledge yet - we dont know whats going on there so thats giving birth to the question of how aliens would explain them. Just like in the past, scientists TODAY can be wrong in those fields. Quantum mechanics and gravitation may not unite, but within them their theories are correct. Maybe they will exist as special cases of a more general theory, just like Newton mechanics exist as a special case of relativity, if youre below a certain velocity. Regarding a "path" taken by humanity, i dont see such a path, i also dont see alternative paths? I see mostly successful explanations of things and the idea that an alien species can come and falsify everything only because they can explain a highly specialized phenomenon which we cant seems irrational.

_____________________________

Фламенко
  REPORT THIS POST AS INAPPROPRIATE |  Date Jan. 16 2013 12:35:20
 
Ricardo

Posts: 14801
Joined: Dec. 14 2004
From: Washington DC

RE: Black Hole eats sun (in reply to Richard Jernigan

quote:

Ummm....I beg to differ.


I think you are splitting hairs on what is meant by "math". Probably cuz you know more about it then the rest of us. Logic and chemistry use equations and we realize its math type equations right away. Looks different but it's the same thing.

Aliens that have some grasp will have for example a periodic table of elements. Perhaps they have a different description or simple method but for sure it will be TRANSLATABLE the fact uranium is 92 and hydrogen is 1, helium 2 etc....

As an analogy with music, we already know so many people make beautiful music with the equal tempered tuning system. They don't have to "know" music theory to make their music. Yet they can't disobey the circle of 5ths implications either, so anyone that understands can easily translate the meaning of the music or express it either way...just a pretty sound or by analysis. The point with alien contact would be to use math to translate their "science and technology" to understand them and vice versa.

Ricardo

_____________________________

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  REPORT THIS POST AS INAPPROPRIATE |  Date Jan. 16 2013 13:18:36
 
marrow3

Posts: 166
Joined: Mar. 1 2009
 

RE: Black Hole eats sun (in reply to XXX

At the heart of the scientific method lies the principle that someone does an experiment, records the result and someone else repeats it. All scientific laws are based on finite data sets. How does this play out ?

the body of scientific knowledge is probably the strongest argument that the physical world has an existence independent of the person or people observing it. That is, it follows a set of processes or laws, the most fundamental of which we know about are General relativity and Quantum mechanics. These are very well established theories where and when we've had the means to test them. Applying them beyond these finite data sets, applying where, as yet, we cannot interrogate by experiment, they become speculative ideas, no matter how well established elsewhere.

However, if the true gods were the gods of Olympus, and they decided to play a trick on us, to believe there existed laws describing how the world worked and deluded us into believing we could improve our quality of life by manipulating the world through scientific knowledge, then they could probably switch off all the laws of science tomorrow - If they so wished. Such ideas as these are unfalsifiable in science and there is nothing we can do about it through experiment.

We study and build up our knowledge of the world through experiment, because it appears to have coherence, and to a remarkable degree. But there is a kind of distant boundary to all of that knowledge that may become unfounded, albeit a very small chance.

How was Newton's gravity overturned by General Relativity ? The aspect that was over turned was the belief that it had universal application. As others have said much of its usefulness has not changed where it does work. And because the scientific method is based on finite datasets giving it the status of universal application would have been dubious - or perhaps due to ambiguity in the way people expressed themselves. Same thing applying either general relativity or quantum mechanics to the center of black holes - both become speculative ideas because we have no relevant datasets for those extreme conditions. And should they be superseded by a unified theory, then they will be like narrow windows on a greater truth as Newton's gravity was to general relativity. Probably IMO.

There still lies a huge gulf between the energies particle accelerators can reach now and those thought necessary to access the extra dimensions predicted by some string theories. There is a sort of analogy to the huge gulf that lies between present brain scanning equipment to study people whilst still alive and that necessary to get down to neuron by neuron detail. So a lot of elements of what might be known will remain out of reach for some time.

The impact of quantum mechanics on physical chemistry, at least where I have come into contact with it seems to be immense. In some area quantum computations have become routine. From drug discovery to transistors at the core of computing technology its use extends well beyond an esoteric backdrop. For example I was looking at one paper on solar cells. The type of solar cell that uses a dye to capture a photon form sunlight and give provide an electron to a circuit - some of the electrons don't go where you want. So in the paper they looked at the molecular structure of the dye and through the combination of semi empirical judgements and quantum mechanical modelling came up with an improvement. They then proceeded to synthisize this new dye (a new compound) and check that it had been successfully prepared. (Need quantum mechanics to do that check and techniques such as NMR, X ray crystallography and so on). They then added the modified dye to the solar cell and confirmed that it had improved the solar cell's efficiency (in simulated sunlight) from something like 11 to 12 % - good for 'dye-sensitised' solar cells. I'm in awe because of the way really fundamental science has been used in an almost routine manner to solve a practical problem. I don't think this is unusual in chemistry.

The point to draw out from the waffle above is that the it's hard to see how the predictive usefulness of quantum mechanics will be lost if it is ever 'overturned', because experience is that it works. Academic and inudustrial labs around the world are in effect constantly adding to the datasets upon which quantum mechanics is based. Just a shame none of those labs have black holes to work with at the same time
  REPORT THIS POST AS INAPPROPRIATE |  Date Jan. 16 2013 14:55:39
 
Richard Jernigan

Posts: 3430
Joined: Jan. 20 2004
From: Austin, Texas USA

RE: Black Hole eats sun (in reply to BarkellWH

quote:



If there were aliens in some distant world in the universe who had developed sufficiently to question the fabric of the Cosmos and were at a high enough intellectual level to run experiments and do the math....

Cheers,

Bill


That's where we part ways: "the math". Human mathematics in 1975 was very different from human mathematics in 1875. The mathematical tools taught to physics grad students 20 years ago were very different friom the tools taught when I was a grad student 50 years ago. The newer tools were much better. A different set of tools from those of 1975 are being taught today, better tools yet. Mathematics is not a static discipline. It progresses more rapidly today than at any previous time. Of course the newer math doesn't invalidate the older math. It's just broader in its scope and more powerful. Fifty years ago algebraic topology, calculus on manfolds and K-theory were the province of a mathematical elite, at the cutting edge of the creation of new mathematics. Now they are the required vocabulary of theoretical physicists. The mathematics of an alien civilization could be radically different from ours just by being more advanced by 50 years.

The physical laws expressed in alien mathematics would have to make the same experimental predictions as ours do, within the range of validity of our physics. But they could be expressed in a different mathematics, and aliens could have laws with a greater span of validity, for example, laws that apply both to particle physics and to gravity.

I think the general public vastly underestimates both the creation of new mathematics, and the potential novelty of alien civilizations.

RNJ
  REPORT THIS POST AS INAPPROPRIATE |  Date Jan. 16 2013 16:31:40
 
guitarbuddha

 

Posts: 2970
Joined: Jan. 4 2007
 

RE: Black Hole eats sun (in reply to marrow3

quote:

ORIGINAL: marrow3


There is a sort of analogy to the huge gulf that lies between present brain scanning equipment to study people whilst still alive and that necessary to get down to neuron by neuron detail. So a lot of elements of what might be known will remain out of reach for some time.




I genuinely worry about this kind of thinking. Imagine if you will that you wanted to learn how a computer works. You could attach probes and imaging apparatus all over it and measure movements of current minutely. You might even be able to model in real time the positions of electrons in each transistor on each chip.
Now this might be a valid endeavor but if you are trying to reconstruct the program that the program that the computer is running then I think that this would not be the best way. If the program had an error then the above would be a very roundabout way of fixing it. Best spend time getting better acquainted with programming and accessing the original source code by hook or by crook.

That is not to say that you will be wasting your time it is just that new tools do not nessecarily render old ones irrelevant. If you listen to neuroscientists and in parrticular undergraduate neuroscientists you would imagine that psychology and related fields are about to be rendered irrelevant. Whilst the exuberance of youth is always invigorating its arrogance remains comical.

Same thing with the people that the human genome is the recipe for life. Well maybe in some respects it is.
Here is a simple recipe

'Mix ingredients, place in an oven'

Now to my mind the biggest challenge there is getting an oven (well ingredients too but shush that doesnt help my analogy). Certainly all genetic manipulation at the moment borrows its oven/incubators from preexisting life. Ok so the resulting product makes its own oven however it is important to remember that we did not. Often seems to get forgotten.

Well back to maths. I think that Ricardo is right that we are quibbling a lot about what maths means. Maybe if we designed a perfect computer which modelled every finite element of the universe in all dimensions perfectly. We could call this computer 'Maths'. A few problems there, firstly the simplest version of this computer would in fact be 'The Universe'.

That being said we might get pretty close at modelling some of it sometimes in some detail. We will call this less ambitious computer 'Possible Maths'. Now whilst members of distant galaxies may or may not experience reality in the way that we do the will certainly be observing the same 'The Universe'(I do hope that those are indeed the aliens we are talking about).

I for one lack the confidence to state categorically the their notional version of 'Possible Maths' will be only trivially different from ours.

But you know maybe it will and maybe James T Kirk will be able to seduce their women.

D.
  REPORT THIS POST AS INAPPROPRIATE |  Date Jan. 16 2013 16:41:14
 
Ruphus

Posts: 3782
Joined: Nov. 18 2010
 

RE: Black Hole eats sun (in reply to hamia

Marrow, your avatar is just lovely with its actual walking movement. ( And I am drunk of a couple thimbles only of hooch, after years of draught in austere environment.)

And here is the subjective take of it:

Quantum mechanics are only there to complete the endless lecture of the worlds imponderability.
Condemned by the religions to not talk to the people himself, god sat desperately, pondering on how to message to the people that they are completely misled.
After 2 thousand years of pulling hair he came up with an idea of how to demonstrate to a blindly designing humanity that one must stay prepared for insights all the time.

After the murder of the neandetaler and all the other atrocities, finally the pondering yielded the idea of quantum mechanics. By introducing the fundamental break of rules of given physics and anything so far appearing determinist, people should be motivated to think over their daily handles and be prepared for realizing a world of upside-down.

Now he just hopes for the effects to not take another two millenias.

Ruphus
  REPORT THIS POST AS INAPPROPRIATE |  Date Jan. 16 2013 17:15:49
 
XXX

Posts: 4400
Joined: Apr. 14 2005
 

RE: Black Hole eats sun (in reply to guitarbuddha

quote:

ORIGINAL: guitarbuddha
But you know maybe it will and maybe James T Kirk will be able to seduce their women.



If not, there is no hope for humanity... and all physics as we know of is falsified


_____________________________

Фламенко
  REPORT THIS POST AS INAPPROPRIATE |  Date Jan. 16 2013 17:56:49
 
marrow3

Posts: 166
Joined: Mar. 1 2009
 

RE: Black Hole eats sun (in reply to guitarbuddha

quote:

I genuinely worry about this kind of thinking. Imagine if you will that you wanted to learn how a computer works. You could attach probes and imaging apparatus all over it and measure movements of current minutely. You might even be able to model in real time the positions of electrons in each transistor on each chip.
Now this might be a valid endeavor but if you are trying to reconstruct the program that the program that the computer is running then I think that this would not be the best way. If the program had an error then the above would be a very roundabout way of fixing it. Best spend time getting better acquainted with programming and accessing the original source code by hook or by crook.

That is not to say that you will be wasting your time it is just that new tools do not nessecarily render old ones irrelevant.


Hi David,

I think I agree with you. Even with the ideal kinds of tool to monitor every last part of the brain with the necessary computer power to analyze it you still got the an enormous task working out what it means and if you can even get the kind of answers you might like to have. I don't want to trivialise anything that is being done now, and if I did I should be shown up for it. This one certainly caught my eye, kinda heart warming

www.reuters.com/article/2012/10/03/us-genome-infants-idUSBRE89215A20121003?feedType=RSS&feedName=scienceNews&utm_source=dlvr.it&utm_medium=twitter&dlvrit=309301

cheers,
Richard
  REPORT THIS POST AS INAPPROPRIATE |  Date Jan. 16 2013 18:18:54
 
BarkellWH

Posts: 3458
Joined: Jul. 12 2009
From: Washington, DC

RE: Black Hole eats sun (in reply to Richard Jernigan

quote:

I think the general public vastly underestimates both the creation of new mathematics, and the potential novelty of alien civilizations.


Erich von Daniken would no doubt agree with you. Von Daniken, you may recall, wrote a book entitled "Chariots of the Gods," in which, inter alia, he claims that the Nazca Lines in Peru were created by ancient extraterrestials as both depictions of themselves and as markers to land their spacecraft. Not sure if von Daniken thinks these ancient aliens had developed a higher form of mathematics, but there you have it.

What many who subscribe to his theories conveniently forget is von Daniken was a Swiss hotel manager who was convicted and sentenced to prison for embezzlement, fraud and forgery. But he has some avid followers. I personally rate von Daniken in the same category of public fraudster (as opposed to criminal fraudster, which he also is) as Carlos Castaneda, who wrote several books on his initiation into shamanism by the supposed shaman Don Juan, who could never be located. The books sold millions.

Cheers,

Bill

_____________________________

And the end of the fight is a tombstone white,
With the name of the late deceased,
And the epitaph drear, "A fool lies here,
Who tried to hustle the East."

--Rudyard Kipling
  REPORT THIS POST AS INAPPROPRIATE |  Date Jan. 16 2013 18:40:14
 
marrow3

Posts: 166
Joined: Mar. 1 2009
 

RE: Black Hole eats sun (in reply to estebanana

quote:

quote:

quote:


Hmm I find this very difficult because we don't even understand what consciousness is. And if we had any idea, I would imagine any mapping of consciousness would have to be as big as the terrain of whatever consciousness is. Meaning the map itself would have to be another form of consciousness. If consciousness encompasses the conscious and the unconscious, and what sentience is, which are all very much real, I doubt whether these can be mapped or explained. But that's just me. Brain nerve mechanics seem like a possible thing to map, but the whole of consciousness, not.


I agree, I think. I meant the word in a vague sense, understanding the brain as a unified whole from the bottom up, with all the functions that it performs in some kind of structure. Could speculate, but who knows. Some definitions of consciousness could be unfalsifiable, haven't really thought about it.



I think broad patterns of consciousness or isolated or single parts of consciousness could and will be seen in brain research through watching brain activity with various modes of tracking how the brain operates.

To be crude, I think it's possible to understand the brain as a piece of meat vis a vis it's operating system of nerves. But ever since De Carte, ( and earlier) we've been wondering what part of consciousness the brain plays. We don't even know if all of consciousness encompassed in the awareness of the brain. It could be the wrong organ to be looking into if consciousness resides in an organ to begin with. The brain could be like an amplifier or receiver to broadcast consciousness to us, the records or radio waves, to make a metaphor, of consciousness could be coming from some other part of our being. The brain simply or unsimply transmits the information to us.

The ones I think who have done a lot of work in mapping consciousness are Buddhist monks. They went about by trail and error over along period of time, but they seem to have some knowledge on how it works. They differentiate between "the meat body" a Buddhist term, and the non corporeal body. So right from the beginning they set up a larger system for researching the subject by recognizing there maybe more then one body to look at. Not that I'm pushing Buddhism, but just mentioning there has been a lot of recent scientific interest in the findings of Buddhist monks about the nature of how the brain works.

Meditation has been shown to alter brain chemistry for new example and there is research going on about how this works. Or at least what is going on physically in the brain. It has also been scientifically noted that monks have high degree of skill or developed aptitude at interpreting rapid micro facial gestures. So science is starting to look at surface, the face and how a meditator or a non-meditator perceives something about a person based on facial changes so rapid they happen dozens per second.

My money is on these types of dual traditional model scientific methods and monks as consciousness researchers inquiries if any thing is to be charted out about consciousness. But I think it is so vast and layered it is not really ultimately chartable, if we even know what it is or where it comes from.

Some people talk about subatomic particles and how we keep seeing or speculating on smaller and smaller particles that get so small they eventually slip through what we know to be real. Maybe there is some connection between consciousness and the physical particles becoming so small they transform into a all pervasive stream and we tuning into this stream. Sort of like "the force" in Star Wars. Ha ha, I think George Lucas based the force on Jung's concept of the collective unconscious and synchronicity.

Maybe there is something there, but I'm willing to let it be and find out later. We all will make shift in consciousness eventually maybe we find out then how it works and just laugh our asses off at all the wires and MRI machines hooked up to a guys brain.


Hi Estebanana,

sorry I did not answer this at the time, just realised it was on the same thread. After reading this at the time I got lost down some path of what the difference is between the kind of knowledge it takes say to work at being a scientist against the body of scientific knowledge that comes more narrowly from the scientific method. And then whether the vocational knowledge that goes into being a scientist is like that say of being a musician, or maybe a luthier or even a Buddhist monk practicing meditation. But I did not reach any conclusion. I'm sure it has been thought about and discussed many times and by comparison my attempts half-baked

So if consciousness is in the heart what happens during a heart transplant, same goes for any other part of the body ? I've heard it said that the number of neurons in the gut amount to something like a second brain. Maybe there's a little bit of consciousness in each organ. If people have a shared consciousness that involves some kind of subatomic particle exchange, if it was electromagentic then if someone was in a metallic box would they fall dead on the spot ? I don't know, many things are possible for all I know. Maybe somethings more plausible than others.

cheers,
Richard
  REPORT THIS POST AS INAPPROPRIATE |  Date Jan. 16 2013 18:47:15
 
guitarbuddha

 

Posts: 2970
Joined: Jan. 4 2007
 

RE: Black Hole eats sun (in reply to marrow3

Hi Richard, my name is David. I was so relieved that you weren't offended by my post. I really struggle with tone and my sense of humour is a bit weird.


Thank you for being so gracious in letting that slide.

D.
  REPORT THIS POST AS INAPPROPRIATE |  Date Jan. 16 2013 19:36:59
 
guitarbuddha

 

Posts: 2970
Joined: Jan. 4 2007
 

RE: Black Hole eats sun (in reply to BarkellWH

quote:

ORIGINAL: BarkellWH

quote:

I think the general public vastly underestimates both the creation of new mathematics, and the potential novelty of alien civilizations.


Erich von Daniken would no doubt agree with you. Von Daniken, you may recall, wrote a book entitled "Chariots of the Gods," in which, inter alia, he claims that the Nazca Lines in Peru were created by ancient extraterrestials as both depictions of themselves and as markers to land their spacecraft. Not sure if von Daniken thinks these ancient aliens had developed a higher form of mathematics, but there you have it.

What many who subscribe to his theories conveniently forget is von Daniken was a Swiss hotel manager who was convicted and sentenced to prison for embezzlement, fraud and forgery. But he has some avid followers. I personally rate von Daniken in the same category of public fraudster (as opposed to criminal fraudster, which he also is) as Carlos Castaneda, who wrote several books on his initiation into shamanism by the supposed shaman Don Juan, who could never be located. The books sold millions.

Cheers,

Bill



Could you develop this some more ? I don't see how it relates to Richards ideas as I understand them. I suspect that he wont either so just a little more would be helpful.

D.
  REPORT THIS POST AS INAPPROPRIATE |  Date Jan. 16 2013 19:46:35
 
guitarbuddha

 

Posts: 2970
Joined: Jan. 4 2007
 

RE: Black Hole eats sun (in reply to marrow3

Hi Marrow just read that piece.

Kind of looks like a PR excercise for the machines manufacturer. The disparity between the headline and the level of current utility of the machine (nil) is frightening.

The story is presented in such a way as to invite the reader to assume that the enhanced speed of the gene sequencer might save lives were it more widely available. Since there are no gene based treatments available then this is rubbish.

It claims that it only maps genes associated with the childs symptoms. Well this is simply not known. We have some associations but incomplete sequencing would actually undermine the potential for genuine research. More likely this partial sequencing is where time is saved.

I found that to be a deeply misleading and unsavoury article. If 'Illumina' want to apply pressure on hospitals to buy their prototypes then why not just bribe officials ? Instead they are using the tools of advertising to bamboozle neurotic donors and the parents of patients into applying pressure on clinicians to buy unnessecary and clinically irellevant machinery.

The willfully misleading presentation of information conflation of incompatible figures reads to me as more than the run of the mill journalist getting ahead of themselves. This was cooked up by some PR git somewhere. We must guard against shallow reading of this toxic fluff.

D.
D.
  REPORT THIS POST AS INAPPROPRIATE |  Date Jan. 16 2013 20:06:35
 
BarkellWH

Posts: 3458
Joined: Jul. 12 2009
From: Washington, DC

RE: Black Hole eats sun (in reply to guitarbuddha

quote:

Could you develop this some more ? I don't see how it relates to Richards ideas as I understand them. I suspect that he wont either so just a little more would be helpful.


Just a facetious take on the novelty of alien civilizations by invoking Erich von Daniken, with his crackpot theories of ancient alien extraterrestials he claims have already visited earth and made their mark. No reputable scientist takes von Daniken seriously. I'm sure Richard will recognize it as the product of my asymmetrical sense of humor.

Cheers,

Bill

_____________________________

And the end of the fight is a tombstone white,
With the name of the late deceased,
And the epitaph drear, "A fool lies here,
Who tried to hustle the East."

--Rudyard Kipling
  REPORT THIS POST AS INAPPROPRIATE |  Date Jan. 16 2013 20:11:51
 
marrow3

Posts: 166
Joined: Mar. 1 2009
 

RE: Black Hole eats sun (in reply to guitarbuddha

quote:

Kind of looks like a PR excercise for the machines manufacturer. The disparity between the headline and the level of current utility of the machine (nil) is frightening.


Hi David,

The press piece refers to the following paper which is peer reviewed

(http://stm.sciencemag.org/content/4/154/154ra135.abstract?sid=253ce8bb-139d-49bb-bb7d-1dfb2f093e76)
Rapid Whole-Genome Sequencing for Genetic Disease Diagnosis in Neonatal Intensive Care Units

Most researchers are from the University of Kansas and some authors are employees of Illumina. Does that guarantee that the information is correct ? sometimes researchers get found committing fraud and papers have to be retracted.

cheers,
Richard
  REPORT THIS POST AS INAPPROPRIATE |  Date Jan. 16 2013 20:38:06
 
guitarbuddha

 

Posts: 2970
Joined: Jan. 4 2007
 

RE: Black Hole eats sun (in reply to marrow3

quote:

ORIGINAL: marrow3

quote:

Kind of looks like a PR excercise for the machines manufacturer. The disparity between the headline and the level of current utility of the machine (nil) is frightening.


Hi David,

The press piece refers to the following paper which is peer reviewed

(http://stm.sciencemag.org/content/4/154/154ra135.abstract?sid=253ce8bb-139d-49bb-bb7d-1dfb2f093e76)
Rapid Whole-Genome Sequencing for Genetic Disease Diagnosis in Neonatal Intensive Care Units

Most researchers are from the University of Kansas and some authors are employees of Illumina. Does that guarantee that the information is correct ? sometimes researchers get found committing fraud and papers have to be retracted.

cheers,
Richard


Gosh..... it's not clear to you that I understood the piece ?

D.
  REPORT THIS POST AS INAPPROPRIATE |  Date Jan. 16 2013 22:18:15
 
estebanana

Posts: 9351
Joined: Oct. 16 2009
 

RE: Black Hole eats sun (in reply to BarkellWH

quote:

I'm sure Richard will recognize it as the product of my asymmetrical sense of humor.


I got it.
But did the Aliens?

_____________________________

https://www.stephenfaulkguitars.com
  REPORT THIS POST AS INAPPROPRIATE |  Date Jan. 16 2013 22:57:45
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