Showing posts with label qualia. Show all posts
Showing posts with label qualia. Show all posts

Monday, February 10, 2014

Why the Concept of "Natural Afterlife" Is Nonsense (2)

If you ask a serious, decently informed person if s/he believes a perpetual motion machine is feasible, the person will likely respond: "Of course not! It's nonsense!" This shows the person may at least have had some basic exposure (maybe in high school physics) to the 2nd law of thermodynamics.  In a more advanced course, i.e. Calculus Physics taken in first year university, two statements express the 2nd law. They are:

(I) The Kelvin -Planck statement:

It is impossible to construct a heat engine, operating in a cycle, which produces no other effect than absorption of thermal energy from a hot reservoir and the performance of an equal amount of work.


II): The Clausius statement:

It is impossible to construct a cyclical machine that produces no other effect than to transfer heat continuously from one body to another at higher temperature.

These are often generalized in another form to read:

The entropy (degree of disorder of a system) increases in all natural processes


Thus, for example, gasoline once burnt in your car engine cannot be captured from the exhaust gases and used over again.. Also, any energy process will also have a large part of any energy produced coming off as unusable waste energy. There is no way, or any process that can deliver 100% usable energy.

In terms of biological -organic systems it means that death is the highest entropy state. This means that once one is dead he remains dead.  There are no "Lazarus-type" resurrections.  Once one's life is extinguished it remains so. In other words, if one adheres to the laws of the natural world there can be no personal afterlives, i.e. peculiar to the individual which are contingent on a lower entropic state (e.g. dream ideation or experience) that pre-existed the person's demise.

However, the supernaturalist doesn't adhere to physical- natural laws, so of course, he is at liberty to invent "afterlives" - even eternal, or "timeless ones".  No biggie. He can even invent "heaven" and "hell" plus "purgatory" - if he happens to be Catholic.

The point is, that unless one is a supernaturalist, he cannot invoke a timeless state contingent on a "dream state" condition that had to involve a particular energy regime associated with synapses in the brain. In other words, a "natural afterlife" which demands indefinite preservation of a synaptic state pre-brain death,  must be as much nonsense as perpetual motion machines.

Let's delve into this further.

According to Bryon Ehlmann,  a proponent of this "theory":

The natural afterlife is timeless. Again, it is the final moment of your NDE. It is like a paused movie scene and the feelings and memories you have at the exact point at which the movie was unknowingly paused. Since it is timeless, no further events happen within the dream. You, however, are never aware of this and that your dream was not just “paused,” but actually stopped since you too were “stopped.”


Now consider: He at once invokes the presumption this "natural afterlife" is timeless. But what must happen in terms of the 2nd law, i.e. to be "timeless"? The answer is that the entropy of the dream- sustained system - whatever it is-  must be zero. However, the natural afterlife proponents decline and indeed reject nonlocal consciousness (e.g. of the Stuart Hameroff or Bohmian type), which means they are hoist on their own petards.  This means they are left with explaining a "dream state" system they invented that has arrived from a higher entropy state to a lower one, something completely disallowed for closed systems. (Wherein the entropy must always increase, unless it can avail itself of external energy, i.e.  green plants in terms of sunlight).

Consider that in the instants preceding actual death, and possibly with an NDE in train, successive brain states evolve leading to one final state:


{s1, s2, s3, s4……………sn}   ®  Ã


Entanglement and increased entropy of neuronal states is dictated by:

 
ENT (Ã) = -Tr à ln Ã

Where Tr denotes the trace  (of diagonal elements)  of the  corresponding density matrix.

This means, using our model from the previous blog post, that synaptic function must begin to slow, i.e. as neural transmission and efficiency begins to recede. The person is headed toward a maximum entropic state as are the specific portions of the brain which create the ideations, dreams, thoughts a person has.

The entropy then will be the total aggregate of accessible states:

ENT(Ã) = ln Ã

Conservation of probability requires:

P/ t = / t (Tr(Ã)) = 0

In other words, the process must be one for which any change in the defined state  Ã   tends to zero , given there can be NO further entropy change. However, the natural afterlife bunch are asserting there is a change from what would be maximum entropy (at death) to a defined zero entropy ("timeless") state, post death, i.e. in their NED (never ending dream scenario). Hence, they are postulating a major contradiction of the 2nd law of thermodynamics.

If one agrees that the synaptic cleft dimension (see last post) is scaled to allow application of the Heisenberg Uncertainty Principle (as Physicist Henry Stapp has shown, i.e. in his 'Mind, Matter and Quantum Mechanics') then it is feasible to obtain a rough estimate of the final energy state potential just before death. I.e. let us imagine the last workable synapse firing to generate an ideation. For this estimate we will allow a   time indeterminacy or:

2 τ = 2 x (10-34) s

Then using:
ΔE Δ t ³  h/2π

the calculated energy change (‘indeterminacy in energy’) is:

ΔE » (h/2π)/  Δ t

Or:

ΔE »  1.05 x 10-34 J-s/ (2 x (10-34) s) » 0.5 J


So one half joule is available - which means for the end state to be sustained this energy must also be sustained, e.g. in the alleged "timeless" state. This is roughly equal to the energy given off by a half-watt bulb (say in a small flashlight) for one second..

 
It is also useful to estimate how much information - as bits-  this amount of energy corresponds to. We already know that one bit has 0.693 kT of energy (in joules) where k is the Boltzmann constant and T is the ambient temperature. Then the number of bits would be:


N(bits) = (0.5 J) / (0.693kT)

 
Taking k = 1.38 x 10-23 J/K and T = 300 K (about typical room temperature), one obtains:


N(bits) = (0.5J) /  [(0.693 x 1.38 x 10-23 J/K) ( 300 K)]


N(bits) = 1.74 x 1020

This would be the total number of bits in the final ideation (dream state)  that would need to be sustained in the timeless state. (The only assumption made is that any given 'frozen'  dream image contains information, it cannot be content or information free, or it doesn't exist - especially to the person allegedly experiencing it.) Thus persistence of the dream image/content  cannot be done without energy, any more than a paused TV image can be sustained without electrical energy. But where is it coming from? The natural afterlifers reject non-local consciousness as even remotely possible, indeed they dismiss consciousness entirely! This leads one to believe they are making the error first identified by Prof. Daniel N. Robinson (op. cit., p. 6):

 
"The claim 'I am conscious of the rabbit in the garden' is different from the claim 'I know there is a rabbit in the garden'.  There is a difference between being conscious of and being conscious. The former is always subject to error. Being conscious or aware is to be the possible subject of an experience, the self."


He also expands on the  notion of self-reference, and takes to task those who believe it to be merely an epiphenomenon of the brain, by way of the 'Mary' problem. 

A bit of digression here: Central to discriminating opposing Materialist models of mind are qualia. The term refers to subjective properties perceived in the material world, including colors, shapes and sounds (music). Arguably, none of these have objective existence but are tied to our neural processing and mode of consciousness. The qualia problem is often also called the Mary problem since it presents a hypothetical character (“Mary”) who inhabits a black and white world, but knows everything about colors in physics terms. Still, though she knows what color signifies – a particular wavelength in the electromagnetic spectrum – she has never experienced it.  The qualia problem helps to distinguish between what many call monistic physicalism and what I refer to as quantum physicalism. Monistic physicalism in its most rudimentary form can be summarized by Victor Stenger’s comment[1]:
 
It does not matter whether you are trying to measure a particle property or a wave property. You always measure particles. Here is the point that most people fail to understand: Quantum mechanics is just a statistical theory like statistical mechanics, fundamentally reducible to particle behavior
 
And the biggest contradiction to Stenger’s interpretation is[2]:
 
Although Y is a real field it does not show up immediately in the results of a ‘single measurement’, but only in the statistics of many such results. It is the de Broglie –Bohm variable X that shows up immediately each time.
 
In Stenger’s monistic physicalism, reality is structured around locality (predicated on particles), and quantum wave mechanics and its inherent potentiality never enters the field Y  to the extent of overturning particle dominance. In this way, emergence and holism are kept at bay. Conversely, J.S. Bell’s awareness of the hidden variable X enables quantum waves to supersede particles and in turn, demands the brain is treated as a quantum mechanical device.
 
 
On account of the latter position, physicist Henry Stapp has correctly noted[3]:
 
Brain processes involve chemical processes which must, in principle, be treated quantum mechanically. In particular, the transmission process occurring at a synaptic junction is apparently triggered by the capture of a small number of calcium ions at an appropriate release site. In a quantum mechanical treatment, the locations of these calcium ions must be treated quantum mechanically
 
 All of this means, again, that the only "natural afterlife" plausibly (albeit improbably) on offer or even remotely feasible based on physical laws, is the one described in the previous post to do with de Broglie waves.
 
Bryon Ehlmann writes:
 
  The natural afterlife is relative. Others know that you are dead and that your brain is no longer functioning and that your last dream—what would have been an NDE had you recovered—has ended, but you do not. For you, the NDE becomes an NED.
 
But this really says nothing, not anything a physicist can hang his hat on, i.e. in terms of energies available, entropy, neural thresholds etc. So whether the 'natural afterlife is relative" is roughly like whether one million angels can dance on the end of a pin, or one thousand.  Others "know you are dead" - ok, fine, but if they have sense they will have an EEG attached at the last instant to see if any mercurial action potential causes wave spikes that might indicate a final dream state. (Better yet, keep the EEG attached over time to see if any tiny wave forms re-appear  - after all a 0.5 J end state in stasis ought to be detectable electrically!)
 
Bottom line: a dream state or dream, final or not, must have energy to support it as I showed. It can't persist indefinitely in a metaphysical vacuum, following death,  no matter how many words (or clever analogies)  the natural afterlife crew churns out.  (See A.J. Ayers'  Language, Truth and Logic).  Those interested in seeing Ehlmann's detailed responses to an earlier blog post of mine on the after life can go to this link.
 
 
 
Then make your own decision!
--------------------------------------
Addendum:
 
 Ehlmann's comment in his link response,  that:

"The deBroglie wave afterlife is described using phrases such as “de Broglie waves,” “essential energy associated with the microtubules disperses out from the brain and becomes ‘entangled’ in a larger, undifferentiated whole,” “quantum coherence,” and “quantum wave states are stored in a multitude of microtubules” as well as by numerous mathematical equations. The complexity is enough to make one’s head spin!"


Is really irrelevant. He mixes up the use of precise language (which any serious person ought to strive to employ to avoid ambiguity), with constructs that others have invoked. Thus, the terms "de Broglie waves", "quantum coherence" and "entanglement" are all well known within the context (QM) in which they apply. Their use doesn't make for 'complexity' but rather exactitude in referencing and distinguishing elements of a hypothesis related to the underpinning physical theory - something Elhmann would do well to attend to more.

"Undifferentiated whole",  likewise, is merely another term (synonym) for quantum nonlocality - which again is basic to discussing anything to do with quantum mechanics. Since de Broglie waves encompass quantum mechanics, it is natural for this term to appear. That doesn't mean the basis is "complex", only that the person approaching it from a more generic (anecdotal) perspective hasn't adequately done his homework.

Where the complexity actually arises is in the use of "micro-tubules" (an added structure of the brain inside neurons) but which is really due to Hameroff and Penrose, not me. Technically, the de Broglie wave hypothesis requires no special additional structures since these decay anyway at the time of death - the only thing really left are wave forms, i.e. the  de Broglie  waves themselves.  NO unheard of violations of natural law are required here, unlike the violations of the entropy law by the NED team.

Ehlmann maintains he is a "skeptic" and he:  "will wait until (my)  theory of de Broglie waves is published in a peer-reviewed scientific journal".  Of course,  this is ridiculous. I make no claim to having a "theory" that is in any way significant enough to qualify to be published in a journal. I only offer the de Broglie wave hypothesis as a scientifically plausible, albeit improbable, explanation for a possible afterlife scenario.  I offered it as part of two blog posts-   because I maintain the 'natural afterlife' proposition of Ehlmann et al isn't plausible at all.

Let me also again clarify that my own POV is that death means the end of whatever had previously existed, including ALL formerly conscious states, ideations and any residual derivatives of them.  That means I implicitly accept the scientific world view of entropy as defining the "arrow of time" (at least in the classical realm) and that death means one has reached a maximum entropy condition. This maximum entropy automatically rules out any "timeless state" embodying any kind of ideation, or "dream" - since such state would have entropy zero.  Others can go along with the natural afterlife if it makes them feel better, but I believe they will only be fooling themselves.
 


[1] Stenger, God and the Folly of Faith, 155
[2] Bell,: Foundations of Physics, (12,) .989
[3] Stapp, H. op. cit., p. 152
 
 

Wednesday, April 24, 2013

The Enigma That Is C.S. Lewis

Monochrome head-and-left-shoulder photo portrait of 50-year-old LewisC.S. Lewis, noted Christian apologist and fictional author (The Screwtape Letters, The Chronicles of Narnia) appears to be enjoying a revival of sorts as a version of his 'Screwtape Letters' is currently playing here in The Springs. Of course, all the resident fundagelicals are going ga-ga over it, but one wonders why.

Lewis, by his own accounts, certainly wasn't dogmatic or doctrinaire. Indeed, it appears the fundies' love for him is evidently based more on assorted canards and myths than reality. All of this lends an aura of enigma to Lewis' life and actual beliefs.

One of the myths is that Lewis used to be an "atheist" who eventually found the light in his thirties and came back to Christianity. In fact, like another Brit of renown - Antony Flew - Lewis was no atheist.  Flew himself was more a secular humanist than actual atheist. But fundies made a huge deal over his "conversion".

The truth is somewhat more mundane and his book There Is a God, is especially instructional. Just one minor little problem with that, Flew never wrote the book!  According to a piece (‘The Turning of an Atheist’) by Mark Oppenheimer. Flew admitted in an interview that he never wrote the book. The actual author was Roy Varghese, a Christian apologist, who did all the original writing and then showed it to Flew, who for some reason okayed it. This was confirmed by Varghese, to Oppenheimer, who describes Varghese as “a crusader and financial backer of those who believe scientific research helps to validate the existence of God.

Getting back to Lewis, he was actually more a devotee of Celtic mysticism from his teens until his 30s, when he rejoined the Anglican Communion. For a great article skewering his so-called atheism see: http://www.secularhumanism.org/library/aah/inniss_8_2.htm  Quoting from the piece:

"Lewis must have been one really chicken-shit atheist. He certainly didn't bear himself with the confidence I have observed in every atheist I have ever met. In Surprised by Joy (now there's a Christian title for you), Lewis characterizes his and others' atheism as follows: "I was at this time living, like so many Atheists or Anti-theists, in a whirl of contradictions. I maintained that God did not exist. I was also very angry at God for not existing. I was equally angry at Him for creating a world." This is kind of like having a dog, but hating it for not barking at prowlers—a dilemma no atheist would recognize."

Indeed, Lewis's alleged atheism borders on the ludicrous. At the very least it's an infantile mutation ...probably much like the self-proclaimed "atheism" espoused by the Columbine Killers. In that respect, it isn't an atheism that any genuine atheist would recognize,  far less embrace. But why be surprised, if so many also thought Antony Flew was a bona fide atheist?

Lewis'  personal Christian re-awakening then spurred his Christian Apologias, including "Mere Christianity", "Miracles", "The Problem of Pain" and "The Screwtape Letters." Chronicles of Narnia can also be included since it plays and reads like a parable-based Apologia, with the evil doers clearly delineated and the Lion ("Aslan") obviously a stand-in for Christ, including the way he's seemingly offered as a blood sacrifice.

Meanwhile, in a kind of reverse theological psychology, Lewis, in The Screwtape Letters,  fabricated an exchange of letters between Uncle "Screwtape" and demon nephew "Wormwood", wherein the mentor demon attempts to educate nephew on the fine points of tempting humans. The letters are elaborate and often go into moral fine points, conundrums and subtleties - so much so that if one isn't careful to remind himself  it's clever  fantasy - he can almost be lured into thinking these are two real demons communicating about human weakness.

At face value,  Lewis’ unconventional morality lesson emerges as a creative masterpiece at getting the unwary to accept demonic reality and personalized evil. But even a minimal application of reason and numerical logic would disclose it is nonsense.

By way of example, in May of 1990 during a debate at Harrison College, Barbados with a Christian who invoked Lewis’ Screwtape narrative I had occasion to do the math for him. I noted that given Lewis’ original likely demonic population of two –thousand, then it followed that when the human population hit six billion each demon would have 3 million humans (each) to try to tempt into a Hell -bound act each day. Given a uniform load, and dividing the labor equally, each demon would only have about 0.028 seconds per day for each temptation.

Obviously, if the world began with only a couple of thousand agents of temptation, they’d never be able to keep up with the temptation burden as the human population increased to hundreds of millions then billions! In this way I used an argument analogous to reductio ad absurdum to show Lewis’ Screwtape fable to be just that, an elaborate fable


Lewis at the time of the original writing (1942), probably expected the serious rationalist to believe that such a clever parable could entice people to accept evil manifested in personal demons. In the same way, he probably expected the same in one of his most famous attempts at attacking Materialism. In that instance, he asserted that "Materialism is self-refuting" - in that if it denies everything (including God) except colliding atoms and molecules in the brain, then one can't possibly account for a consciousness capable of thinking, reasoning and even being critical of itself.

Alas, Lewis was tilting at the windmill of an ancient Materialism - the one conceived by the ancient Greek atomists Demokritos and Leucippus. The one in which matter is reduced to 'hard' atoms and molecules simply interacting with each other endlessly in a reductionist phantasm.  It would be at least 15 more years before a quantum -based Materialism arose that embraced invisible fields, and waves as opposed to basing reality on hard particle interactions. This new view was perhaps embodied best in the quantum potential of physicist David Bohm:


VQ=   {-ħ2/ 2m} [Ñ R]2 / R


I can't fault Lewis too much because in his simplistic approach he couldn't have known how difficult issues of different forms of Materialism would subsequently become. In a stirring article appearing in Philosophy Now, (Nov./Dec. 2012, p. 28)  Graham Smetham cogently argues that since formal quantum mechanics dispenses with the fiction of a truly objective observer (hence configurations of matter are dependent on the observer and his apparatus) then the mind cannot be reduced to the brain.  If any Materialist models do so, or regard consciousness as an epiphenomenon, then Smetham dismisses them as  "false models of Materialism". They embody a false Materialism because they attempt to explain something as complex as thought and consciousness using simple molecular interactions.

Central to discriminating opposing Materialist models of mind are qualia. The term refers to subjective properties perceived in the material world, including colors, shapes and sounds (music). Arguably, none of these have objective existence but are tied to our neural processing and mode of consciousness. The qualia problem is often also called the Mary problem since it presents a hypothetical character (“Mary”) who inhabits a black and white world, but knows everything about colors in physics terms. Still, though she knows what color signifies – a particular wavelength in the electromagnetic spectrum – she has never experienced it.  The qualia problem helps to distinguish between what many call monistic physicalism and what I refer to as quantum physicalism.

In this sense, and in hindsight, we now know that a crude version of the monistic physicalist form of Materialism is what Lewis was actually attacking - given THAT form demanded a hyper-reductionist format. Lewis' problem then, wasn't God being omitted from the equation, but the absence of the broad spectrum of quantum mechanics that enables a Materialist explanation of consciousness without invoking supernatural essences.

One wonders how transformative a philosopher Lewis might have been had he had at hand the insights of modern quantum mechanics.

But one thing we do know:  his embrace of Anglicanism rather than Christian Fundamentalism should come as no surprise and not be an enigma. Lewis was a rationalist thinker to his dying day, and though he 're-converted'  he never trusted ideologies or faiths (even operating under the umbrella of Christendom) that arrogated to themselves all truth. This is a cautionary note many of his fundie followers would do well to bear in mind.