by gg3 » Mon 17 Jul 2006, 03:43:43
Re. Sicophiliac:
The stuff you saw on Discovery was real (or was a demonstration based on real research), and wasn't rigged (the original research was sound).
The experiments on random targets ("coin toss program") were typical of the work done at Princeton in the 80s and 90s. They, as with most similar experiments, demonstrate an effect that is robust (persistent and easily replicable) but small (the slight percentage shifts in outcomes), and highly statistically significant over large numbers of runs (where the slight shift in outcomes becomes less and less likely to have occurred by chance). This is what I meant when I said "a trickle of bits." Nonlocal information flows to/from the human brain are small but persistent.
The item about disturbing pictures retrocausally triggering stress reactions is based on a very interesting set of experiments and a later analysis thereof. Darn if I can't cite author and publication, but you can probably look this up under "retrocausality" and find it online. Basically what happened was that some researchers were looking to measure brain responses to stressful imagery, and they were originally looking at the period of time *after* exposure to each image. They got their findings, published their papers, and that was that; they were not concerned with retrocausality, they were not looking for it, they didn't publish about it.
Later on, *a different researcher* looked over their raw data and discovered that there were specific and regular brain responses that occurred shortly *before* each of the disturbing images were shown, but not before each of the neutral or positive images were shown. In other words, a clear retrocausal effect, small and subtle but highly robust and statistically significant. So the researcher who published the retrocausality study was using data that had been collected by others for an entirely different purpose.
The above cases were not measurement errors. The original data were recorded and stored on computers with sufficient accuracy to prevent that kind of mundane misinterpretation.
This stuff shouldn't be surprising; a number of equations in modern physics are time-independent, i.e. they work equally well in forward time or in reverse time. The most accurate view seems to be that time is a scalar (quantity without direction) rather than a vector (quantity with direction). It also shouldn't be surprising that the human brain is capable of interacting with scalar time, any more than that the human eye can detect single photons against a totally dark background.
That is, none of this throws common sense out the window. That already happened with Einstienian relativity and quantum physics throughout the 20th century:-) Or more specifically, the notion of common sense has been revised in light of new theories and findings. Consider how many centuries have elapsed since we determined that the Earth orbits the Sun and not vice-versa, yet people still talk about the Sun "rising" and "setting." Traditional ideas of "common sense" take longer to change in the culture at-large than in the scientific community.
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Re. Sicophiliac, "...proof of the soul..."
Nope, the above and other suchlike, do not give us proof of the soul as conceptualized in religion.
In fact this debate has occurred before. Western psychology began (in the late 1800s) with psychodynamics, i.e. the study of mental events, typically related to differences between healthy individuals and psychiatrically disturbed individuals. Behaviorism arose (in the early 2nd half of the 20th century) as a countervailing body of theory, concerned with externally observable behaviors and not with subjective events. The behaviorists made the point that subjective events were not amenable to scientific treatment, and that the psychodynamic school was basically engaged in a search for the soul.
Since that time, new techniques of measurement, from the EEG forward, have made it possible to correlate objective observables with subjective reports, so the tension between psychodynamic and behavioral theories has abated somewhat. But the point is, the critique "searching for the soul" has occurred before; it tends to occur whenever psychology attempts to deal with subjective events, and the present debate is no different in that regard.
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Rogerhb: re. Pavlov:
Doesn't work that way. Randomized target sequence: some disturbing images, some pleasant, some neutral, where the target selection occurred in realtime rather than being predetermined. Pavlov doesn't apply when dealing with randomized stimuli.
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Energy Unlimited, re. "...you cannot predict the future without time machine..."
Nonlocal information does not provide predictions as such, i.e. information known ahead of time to be true. In the human brain as in photon entanglement experiments, you don't know the actual state of the nonlocal target except via local information available locally.
This brings up the obvious question, "if that's so, then how could nonlocal information have had survival value to humans?" The answer is, statistically and over long time spans. A "small trickle of bits" is sufficient to indicate (for example) "game animal is this way" or "predator is that way." The confirming local signal would be the sighting of a game animal, not being attacked by a predator, etc. Groups of humans whose brains were more nonlocally capable, would have a slight edge over groups of humans whose brains were less so or not at all (or whose culture did not provide the means of using the information).
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Fergus, re. "are we trying to prove God exists..?"
No, no more than was Edwin Hubble when he conceived the Big Bang theory; though the fact that he was also a priest was used for some time as a basis for questioning his motives. But either way it turned out he was right (as far as we can determine), and either way, the Big Bang did not prove (or disprove) the existence of God.
In fact, if you postulate a God who is omniscient and omnipotent, then you have an entity that can foresee the intent of any experimental design and can affect the outcome of any experimental procedure. Thus, there is no experimental design or procedure that will produce a reliable confirmation or refutation of the existence of that entity. By analogy think of a Turing test where the evaluator always knows whether s/he is communicating with another human or with a computer. The evaluator's judgement of whether the computer is sufficiently human-like to pass the Turing test, will always be biased by their knowledge of the actual situation, and this invalidates the test under those conditions.
To postulate that God always knows, is to invalidate any possible test of the existence of God.
The view I take of science and religion is that they are complimentary rather than mutually exclusive, in the same manner as sculpture and symphony, ballet and literature, etc.: truth or beauty in one art form does not translate to truth or beauty in another, each abides in its own domain. You can't judge a sculpture by a symphony. Nor can you use one for the purpose of another: studying the literature of a period of history may help inform you of the context in which music was written at the time, but does not inform you about the music itself.
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AIM9X: re. the hard problem
Your description is right on target. The easy problems of consciousness are well-solved by now, including the question of mystical experience itself (as per the psilocybin experiments).
Chalmers makes similar points about qualia as fundamentals. And you make a good point about the irreducibility of other fundamentals not counting against their relevance in theories of physics. Where I go with this is to say that qualia are the emergent phenomena of the interaction between brain and information. At one level this is mundanely obviously true: light strikes the retina and you perceive color. At a deeper level this is addresses the hard problem: consciousness is the metaprocessing of qualia, and mind is the entity that consists of the entire set of emergent phenomena involving brain and information.
Re. "the entire universe may have a low level of 'consciousness'..."
Before anyone takes that as a rationalization for animism, what AIM9X is getting at is the idea that information can be self-reflexive and self-modifying, as in any type of feedback mechanism, for example a thermostat. Interactions in the physical universe involve matter and energy acting locally, and presumably also involve nonlocal actions as well (entangled photons etc.). What you have there is a large set of interacting feedback mechanisms on astrophysical scales of spacetime.
Nice description of information as the emergent phenomenon from patterned contrasts between 0s and 1s. Well said.
Also, good stuff re. everything & nothing. And for those here who might try to dismiss it as nonsense, consider Godelian incompleteness. Attempts to describe an entire system from within the system itself are necesssarily incomplete, and any such description will always appear to be paradoxical. A complete description of the natural universe necessarily includes a description of consciousness as an element of it; we have no choice but to try to describe consciousness even though we reside within the system. And so we end up with paradoxical language as our best approximation.
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EnergyUnlimited, re "consciousness disappears when you sleep..."
In fact that's not correct; consciousness does not cease, it just slows down to a much slower timescale. Normal waking consciousness is driven by brain activity in the range of 30 to 60 cycles per second (Hz). During the deepest states of nondreaming sleep, brain activity slows down to 0 - 4 Hz: roughly 1/10 of normal. Thus we would expect (and in fact we actually find) that thought processes run at roughly 1/10 of normal speed.
What makes it appear as though consciousness is absent during sleep, is the rapidity of the transition from sleep to waking that occurs in most individuals in most cultures. By analogy, if your eyesight has dark-adapted in a dark room and then you enter a brightly-lit room and attempt to look back into the dark room, you won't see the objects in the dark room (though you'll still know that those objects are still present).
Here I should also mention that a few times I've had the experience of "lucid nondreaming sleep" where I became aware of thought processes during deep sleep and noticed (perhaps by comparison with other physiological markers such as heart rate?) that they were present but very much slowed down compared to normal. One anecdotal observation does not a hypothesis make, but the hypothesis (of sleeping consciousness) was already present in cognitive science to begin with; my experience was nothing more than a personal observation of a known phenomenon.
As for death, we still don't know. My best guess is that the information from which individual mind/consciousness emerges, which is densely localized in the brain during the individual's lifetime, dissipates into the larger field of information-at-large when the brain ceases to function. As with other fundamentals (matter, energy, spacetime), information is neither created nor destroyed, but merely changes form. The individual localized "me" ceases to exist in much the same way as an individualized drop of rain ceases to exist when it splashes into a pond or ocean. So strictly speaking, the conclusion of this line of reasoning would be that there is not an individualized immortal soul in the sense held by religion. For all I know, information-at-large could be self-organizing in a manner that qualifies as conscious, but that's getting way beyond the present scope of data or theory.
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Re. Sicophilac, re. uploading and downloading mind.
You would not have continuity of experience forward, but the replicated-you would have apparent continuity of memory backward. In other words, dead is dead, you're still gone, and the replicated-you in the future is a new and distinct person though with your memories.
Re. those brain surgery cases: Nice bit of reasoning there, but I would have to say that those people are still the same people as they were before their brains were temporarily switched off. Not only is the configuration of information identical, but the entity in which it resides is the same entity.
The difference hinges on whether the individual mind is merely suspended for a period of time and then re-started, or destroyed entirely and a new copy created.
There is a difference between brain/mind and a lump of rock, which is structural complexity and order. The brain/mind is highly syntropic (negentropic) compared to the rock.
As for the "two copies" problem: Assuming it's possible in the first place, a hypothetical Star Trek transporter that replicates rather than transports: what you end up with is three distinct individuals, all having the same set of memories. Their histories begin to diverge from the moment they all "wake up."
For example, let's say that Me 1, Me 2, and Me 3 decide to live together and share everything as if one person. One day, Me 1 is on the job working, while Me 2 is out socializing. Me 2 meets someone interesting and one thing turns into another, turns into spending a most intimate afternoon at the other person's house: love at first sight. As per our sharing arrangements, we arrange for Me 1 to go out on the next date with that person. Now Me 1 has not had the experience of meeting the person and falling in love at first sight, so Me 1 has to start from scratch with that person. Same case for Me 3. And if Me 3 has a conversation with the other person, Me 3 has to fill Me 1 and 2 in on the conversation so there is some continuity with the other person so the other person doesn't wonder if they're dealing with someone who's crazy or has no memory. But for each Me, the relationship consists of 1/3 first-person and 2/3 information shared from the other Mes. Each Me does not have a complete set of memories of the events of the relationship.
Now let's say that Mes 1, 2, and 3 each went out socializing to different parties on a Friday night, and each Me met someone wonderful and fell in love at first sight. Now assume that we decide to let each relationship run in parallel, i.e. not "share" partners. Each relationship is a separate timeline and set of experiences and memories. If Me 1 and his partner broke up painfully but Me 2 and his partner stayed in love, each Me would have a separate and distinct set of emotional lessons learned, which would affect his future with respect to seeking future relationships. In any case, each Me is a mind unto himself; there is not a "group mind" among us.
Last but not least, the fact that certain cellular substructures of the neurons are at borderline quantum scale, means that any attempt to replicate them will necessarily have a margin of error due to quantum uncertainty. By analogy, each copy will come out with a different set of "bits" flipped to 0 and to 1. In some cases, the difference from the original will be inconsequential. In other cases, highly consequential. And there is no way to predict which copies will be closer to the original and which will be more radically different. For all we know, this flipping of quantum bits in the nerve cells may even affect memory. But in any case, as a practical matter, the complexity and density of the brain is such that it will never become possible to scan and upload its contents without substantially altering the brain and the data stream in the process (and in this case, "never" is a safe claim, as even a brief study of neuroanatomy will demonstrate).
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Robski, re. people under anaesthetics:
What you're describing are out-of-body experiences with objective correlates. Fairly common, and interesting in that they involve an apparently higher bandwidth of nonlocal perception than we find in e.g. the Princeton studies.
Undoubtedly these experiences are the source of much that has gone into the shamanic traditions, and into religion generally. Whether they prove the existence of soul, much less of God, is beyond the scope of present research.
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All of this is very interesting; I never expected that the PO website would spawn a little consciousness studies seminar, but we've had this topic and the psilocybin research this weekend, so that's two.