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Friday, 8 August 2014
Schooled again:The original technologist continues to put Darwinists in their place.
Phys.org: Specialized Retinal Cells Are a "Design Feature," Showing that the Argument for Suboptimal Design of the Eye "Is Folly"
Casey Luskin August 8, 2014 4:57 AM
In 2010, the pro-ID website Access Research Network (ARN) posted its Top Ten Darwin and Design Science News Stories of the year, and its No. 1 story was a paper in Physical Review Letters, "Retinal Glial Cells Enhance Human Vision Acuity." Why was this article ARN's top story for the year? Because it found that special "Müller glia cells" sit over the retina, acting like fiber-optic cables to channel light through the optic nerve wires directly onto the photoreceptor cells.
This refuted the old objection to intelligent design that the vertebrate eye is "poorly designed" because the optic nerve extends over the retina instead of going out the back of the eye. These cells ensure that there is no loss of visual acuity due to the presence of the optic nerve, as the paper found, revealing the retina "as an optimal structure designed for improving the sharpness of images." As New Scientist put it at the time, these funnel-shaped cells "act as optical fibres, and rather than being just a workaround to make up for the eye's peculiarities, they help filter and focus light, making images clearer and keeping colours sharp." We also reported on this here.
Now a new paper in Nature Communications, "Müller cells separate between wavelengths to improve day vision with minimal effect upon night vision," has expanded upon this research, further showing the eye's optimal design. According to the paper, Müller cells not only act as optical fibers to direct incoming light through the optic nerve, but are fine-tuned to specific wavelengths to ensure that light reaches the proper retinal cells. From the Abstract:
Vision starts with the absorption of light by the retinal photoreceptors -- cones and rods. However, due to the 'inverted' structure of the retina, the incident light must propagate through reflecting and scattering cellular layers before reaching the photoreceptors. It has been recently suggested that Müller cells function as optical fibres in the retina, transferring light illuminating the retinal surface onto the cone photoreceptors. Here we show that Müller cells are wavelength-dependent wave-guides, concentrating the green-red part of the visible spectrum onto cones and allowing the blue-purple part to leak onto nearby rods. This phenomenon is observed in the isolated retina and explained by a computational model, for the guinea pig and the human parafoveal retina. Therefore, light propagation by Müller cells through the retina can be considered as an integral part of the first step in the visual process, increasing photon absorption by cones while minimally affecting rod-mediated vision.(Amichai M. Labin, Shadi K. Safuri, Erez N. Ribak, and Ido Perlman, "Müller cells separate between wavelengths to improve day vision with minimal effect upon night vision," Nature Communications, DOI: 10.1038/ncomms5319 (July 8, 2014).)
The paper presents Müller cells as a direct answer to the view that the vertebrate eye has a suboptimal wiring:
[T]he mammalian retina and the peripheral retina of humans and primates are organized in a seemingly reverse order with respect to the light path. This arrangement places the photoreceptors, responsible for light absorption, as the last cells in the path of light, rather than the first. Therefore, the incident light must propagate through five reflecting and scattering layers of cell bodies and neural processes before reaching the photoreceptors. This 'inverted' retinal structure is expected to cause blurring of the image and reduction in the photon flux reaching the photoreceptors, thus reducing their sensitivity. It has been recently reported that retinal Müller cells act as light guides serving to transfer light across the retina, from the vitreo-retinal border towards the photoreceptors.
How do Müller cells accomplish this feat? The article continues: "A single Müller cell collects light at the vitreo-retinal surface from an extended retinal region, and guides it onto one coupled cone, located at its distal end." The shape of the Müller cells -- wide at the top where it collects light, and narrow at the bottom where it delivers light to the rods and cones -- presents a potential optimization tradeoff between day vision (which depends more on efficient light transmission to the rods) and night vision (which depends more on efficient light transmission to the rods).
They then ask an engineering question: "Can this cost-benefit optimization problem between day vision and night vision be solved, without significantly impeding one or the other?" They find that the retina is optimized to solve this problem:
[H]uman Müller cells separate white light according to its wavelengths; medium- and long-wavelength light is concentrated onto cones and short-wavelength light leaks to illuminate nearby rods. Next, we show similar theoretical calculations for the guinea pig Müller cells and describe imaging experiments in the isolated guinea pig retina, to find remarkable agreement between the experimental results and the computational model. These findings are consistent with the hypothesis that the wave guiding properties of Müller cells are wavelength-dependent in a manner that improves cone-mediated vision while minimally impeding rod-mediated vision.
The paper explains that Müller cells give the retina a specialized architecture to foster light collection: "We could clearly identify distinct light guiding tubes across most of the retinal depth, spanning the retina from the retinal surface down to just above the photoreceptors. The only retinal structures that fit these light-guiding tubes are the Müller cells." They conclude:
The findings presented here indicate that the spectral separation of light by Müller cells provides a mechanism to improve cone-mediated day vision, with minimal interference with rod-mediated night vision. This is achieved by wavelength sorting of incident light by the Müller cells. Light of relevant wavelengths for cone visual pigments is directed towards the cones, while light of wavelengths more suitable for rod vision is allowed to leak outside the Müller cells towards the surrounding rods. This is a novel mechanism that needs to be considered when visual phenomena concerning cone- and rod-mediated vision are analysed.
The implications of these findings have not been lost on expert optics commentators. A striking article at Phys.org about this new paper, Fiber optic light pipes in the retina do much more than simple image transfer," reflects a keen awareness of the debate over whether the vertebrate eye is suboptimally designed. It concludes that the retinal architecture, as it now stands revealed, settles the debate. In the words of Phys.org, the notion that the vertebrate eye is suboptimally wired "is folly." Why? Because "Having the photoreceptors at the back of the retina is not a design constraint, it is a design feature." Here's the full passage from the article:
Having the photoreceptors at the back of the retina is not a design constraint, it is a design feature. The idea that the vertebrate eye, like a traditional front-illuminated camera, might have been improved somehow if it had only been able to orient its wiring behind the photoreceptor layer, like a cephalopod, is folly. Indeed in simply engineered systems, like CMOS or CCD image sensors, a back-illuminated design manufactured by flipping the silicon wafer and thinning it so that light hits the photocathode without having to navigate the wiring layer can improve photon capture across a wide wavelength band. But real eyes are much more crafty than that.A case in point are the Müller glia cells that span the thickness of the retina. These high refractive index cells spread an absorptive canopy across the retinal surface and then shepherd photons through a low-scattering cytoplasm to separate receivers, much like coins through a change sorting machine. A new paper in Nature Communications describes how these wavelength-dependent wave-guides can shuttle green-red light to cones while passing the blue-purples to adjacent rods. The idea that these Müller cells act as living fiber optic cables has been floated previously. It has even been convincingly demonstrated using a dual beam laser trap. In THIS case (THIS, like in Java programming meaning the paper just brought up) the authors couched this feat as mere image transfer, with the goal just being to bring light in with minimal distortion. (Emphasis added.)
Take special note of the sentences I've put in bold at the end of the last paragraph. These recent discoveries about the retina were made by proposing that Müller cells behave like "living fiber optic cables" that have a "goal" to "bring light in with minimal distortion." This is an example ofsystems-biology-thinking, as I described it here recently, where you assume that biological systems function much like goal-directed technology, and then reverse engineer a system to determine how it works. Such teleological thinking is once again bearing fruit in biology.
But the Phys.org article explains that these Müller cells aren't just passive cables that transfer images -- they are dynamic structures that can adjust to the amount of incoming light to avoid distorting the image:
In considering not just the classical photoreceptors but the entire retina itself as a light-harvesting engine, it seems prudent to also regard its entire synaptic endowment as a molecular-scale computing volume. In other words, when you have many cells that have no axons or spikes to speak of, that can completely refigure their fine structure within a few minutes to handle changing light levels, every synapse appears as an essential machine that percolates information as if at the Brownian scale, or even below.[...]Most incredibly, like the wings of a swallow, the retina more-or-less works right out of the box, even if it has not seen any exercise. In seeking to understand how it then further refines its delicate structure we should perhaps not overlook the pervasive organizing influence of the incoming photons themselves. Now that it is becoming abundantly clear that the whole works can "feel" them, the next question to answer is how.
A Darwinian paradigm assumes that biological systems are cobbled together haphazardly by natural selection over eons of unguided descent with modification. Compare that paradigm with one that recognizes intelligent design and that accordingly predicts biological systems are built from the top down. In investigating the evidence of biology, ID expects to find goal-directed structures that are organized much like human technology -- except better, it often seems. Which model seems the more appropriate here?
The Watchtower Society's commentary on holy angels
ANGEL
Both the Hebrew mal·ʼakh′ and the Greek ag′ge·los literally mean “messenger.” From the first book of the Bible to the last, these words occur nearly 400 times. When spirit messengers are indicated, the words are translated “angels,” but if the reference definitely is to human creatures, the rendering is “messengers.” (Ge 16:7; 32:3; Jas 2:25; Re 22:8; see MESSENGER.) However, in the highly symbolic book of Revelation certain references to ‘angels’ may apply to human creatures.—Re 2:1, 8, 12, 18; 3:1, 7, 14.
Angels are sometimes termed spirits; that which is spirit is invisible and powerful. Thus we read: “A spirit came out and stood before Jehovah”; “Are they not all spirits for public service?” (1Ki 22:21; Heb 1:14) Having invisible spiritual bodies, they make their abode “in the heavens.” (Mr 12:25; 1Co 15:44, 50) They are also termed “sons of the true God,” “morning stars,” and “holy myriads” (or “holy ones”).—Job 1:6; 2:1; 38:7; De 33:2.
Not being creatures that marry and reproduce their own kind, the angels were individually created by Jehovah through his firstborn Son, “the beginning of the creation by God.” (Mt 22:30; Re 3:14) “By means of him [this firstborn Son, the Word] all other things were created in the heavens . . . the things invisible . . . Also, he is before all other things and by means of him all other things were made to exist.” (Col 1:15-17; Joh 1:1-3) The angels were created long before man’s appearance, for at the ‘founding of the earth’ “the morning stars joyfully cried out together, and all the sons of God began shouting in applause.”—Job 38:4-7.
As for the number of the angelic hosts of heaven, Daniel said he saw “a thousand thousands that kept ministering to [God], and ten thousand times ten thousand that kept standing right before him.”—Da 7:10; Heb 12:22; Jude 14.
Order and Rank. As with the visible creation, so also in the invisible realm there is order and rank among the angels. The foremost angel, both in power and authority, is Michael, the archangel. (Da 10:13, 21; 12:1; Jude 9; Re 12:7; see ARCHANGEL; MICHAEL No. 1.) Because of his preeminence and his being called “the great prince who is standing in behalf of the sons of [God’s] people,” he is presumed to be the angel that led Israel through the wilderness. (Ex 23:20-23) Ranking very high among the angels in privileges and honor are the seraphs. (Isa 6:2, 6; see SERAPHS.) More frequently (some 90 times), the Scriptures mention the cherubs, and from the description of their duties and responsibilities it is apparent that they, too, hold a special position among the angels. (Ge 3:24; Eze 10:1-22; see CHERUB No. 1.) Then there is the great body of angelic messengers who serve as a means of communication between God and man. However, they do more than simply relay messages. As agents and deputies of the Most High God, they serve as responsible executioners of the divine purpose, be it protection and deliverance of God’s people or destruction of the wicked.—Ge 19:1-26.
Personality. Some may deny distinct personality of individual angels, claiming they are impersonal forces of energy dispatched to accomplish the will of God, but the Bible teaches otherwise. Individual names imply individuality. The fact that two of their names, Michael and Gabriel, are given establishes the point sufficiently. (Da 12:1; Lu 1:26) The lack of more names was a safeguard against giving undue honor and worship to these creatures. Angels were dispatched by God as agents to act in his name, not in their own name. Hence, when Jacob asked an angel for his name, he refused to give it. (Ge 32:29) The angel that approached Joshua, when asked to identify himself, replied only that he was “prince of the army of Jehovah.” (Jos 5:14) When Samson’s parents asked an angel for his name, he withheld it, saying: “Just why should you ask about my name, when it is a wonderful one?” (Jg 13:17, 18) The apostle John attempted to worship angels and was twice rebuked: “Be careful! Do not do that! . . . Worship God.”—Re 19:10; 22:8, 9.
As personalities, angels have the power to communicate with one another (1Co 13:1), the ability to talk various languages of men (Nu 22:32-35; Da 4:23; Ac 10:3-7), and the thinking ability with which to glorify and praise Jehovah (Ps 148:2; Lu 2:13). It is true that angels are sexless, because Jehovah made them so, not because they are impersonal forces. Angels are generally represented as males, and when materializing it was always in the male form, because God and his Son are spoken of as males. However, when certain materialized angels indulged in the pleasure of sex in the days of Noah, they were expelled from Jehovah’s heavenly courts. Here was a display of angelic individuality, for, like humankind, they too are free moral agents, with the power of personal choice between right and wrong. (Ge 6:2, 4; 2Pe 2:4) By personal choice, hordes of angels joined Satan in his rebellion.—Re 12:7-9; Mt 25:41.
Powers and Privileges. Since God created man “a little lower than angels” (Heb 2:7), it follows that angels have a greater mental capacity than man. They are superhuman in power too. “Bless Jehovah, O you angels of his, mighty in power, carrying out his word.” Angelic knowledge and power were displayed when two angels brought flaming destruction upon Sodom and Gomorrah. A single angel killed 185,000 of the Assyrian army.—Ps 103:20; Ge 19:13, 24; 2Ki 19:35.
Angels too can travel at tremendous speeds, far exceeding the limits of the physical world. Thus when Daniel was praying, God dispatched an angel to answer his prayer; and the angel arrived within moments, even before the prayer was concluded.—Da 9:20-23.
But for all their higher mental and spiritual powers, angels have their limitations. They did not know the “day and hour” when this system of things would be swept away, Jesus said. (Mt 24:36) They take a keen interest in the outworking of Jehovah’s purposes, yet there are some things they do not understand. (1Pe 1:12) They rejoice at the repentance of a sinner, and they watch the “theatrical spectacle” furnished by Christians here on the world stage of public activity. They also observe the proper example of Christian women who wear a sign of authority upon their heads.—Lu 15:10; 1Co 4:9; 11:10; see IMMORTALITY(Kingdom Heirs Granted Immortality).
As Jehovah’s ministers, the angels have enjoyed many privileges during the aeons of passing time. Angels ministered on behalf of Abraham, Jacob, Moses, Joshua, Isaiah, Daniel, Zechariah, Peter, Paul, and John, to mention but a few. (Ge 22:11; 31:11; Jos 5:14, 15; Isa 6:6, 7; Da 6:22; Zec 1:9; Ac 5:19, 20; 7:35; 12:7, 8; 27:23, 24; Re 1:1) Their messages contributed toward the writing of the Bible. In Revelation angels are mentioned far more times than in any other Bible book. Innumerable angels were seen around the great throne of Jehovah; seven blew the seven trumpets, while another seven poured out the seven bowls of God’s anger; an angel flying in midheaven had “everlasting good news”; but another proclaimed, “Babylon the Great has fallen.”—Re 5:11; 7:11; 8:6; 14:6, 8; 16:1.
Support of Christ and followers. From beginning to end, the holy angels of God followed the earthly sojourn of Jesus with extreme interest. They announced his conception and birth, and they ministered to him after the 40-day fast. An angel strengthened him when he prayed in Gethsemane on his final night as a human. When the mob came to arrest him, he could have called for no less than 12 legions of angels had he chosen to do so. Angels also announced his resurrection and were present at his ascension into heaven.—Mt 4:11; 26:53; 28:5-7; Lu 1:30, 31; 2:10, 11; 22:43; Ac 1:10, 11.
Thereafter, God’s spirit messengers continued ministering to his servants on earth, even as Jesus promised: “Do not despise one of these little ones; for I tell you that their angels in heaven always behold the face of my Father.” (Mt 18:10) “Are they not all spirits for public service, sent forth to minister for those who are going to inherit salvation?” (Heb 1:14) No longer do these mighty angelic ones appear visibly in behalf of Jehovah’s servants on earth, as when they delivered the apostles from prison; nevertheless, God’s servants are assured of the ever-present, invisible protecting armies, as real as those that surrounded the prophet Elisha and his servant. “He will give his own angels a command concerning you, to guard you in all your ways.” Yes, “the angel of Jehovah is camping all around those fearing him, and he rescues them.”—Ps 91:11; 34:7; Ac 5:19; 2Ki 6:15-17.
Angels are further shown accompanying Jesus Christ when he comes for judgment, separating “the wheat” from “the weeds” and “the sheep” from “the goats.” Angels joined with Michael in his war on the dragon and the demons at the birth of God’s Kingdom in heaven. They will also support the King of kings in fighting the war of the great day of God the Almighty.—Mt 13:41; 25:31-33; Re 12:7-10; 19:14-16.
Russia's activist Judges continue to devise evil by law.
Psalm94:20NKJV"Shall the throne of iniquity, which devises evil by law,
Have fellowship with You?"
Have fellowship with You?"
JULY 31, 2014 | RUSSIA
Taganrog Court Convicts Jehovah’s Witnesses for Practicing Their Faith
On July 30, 2014, the Taganrog City Court convicted and sentenced 7 of 16 Witnesses on trial for attending and organizing their peaceful religious meetings. They were prosecuted merely for carrying out the same religious activity that Jehovah’s Witnesses perform around the world. This verdict sets a dangerous precedent in restricting religious freedom for Jehovah’s Witnesses throughout Russia.
The judge had scheduled to announce the verdict on July 28, 2014, but he adjourned to the following day. On July 29, the judge read the 100-page decision all day and continued on the morning of July 30. He sentenced four congregation elders to prison terms of five to five and a half years and to pay a 100,000 ruble ($2,800 U.S.) fine. He sentenced three other Witnesses to pay fines of 50,000 to 60,000 rubles ($1,400 to $1,700 U.S.) each. The judge waived all of the fines because the investigation and trial exceeded the statute of limitations, and he suspended the prison sentences. The remaining nine Witnesses were acquitted.
In reaching his decision, the judge relied on the September 2009 ruling of the Rostov Regional Court to liquidate the Local Religious Organization of Jehovah’s Witnesses in Taganrog. Although the 2009 ruling targeted only the legal entity, the judge determined that the religious activity of all of Jehovah’s Witnesses in Taganrog and surrounding districts was banned.
During the 15-month-long trial, those accused testified that they would not renounce their faith and would continue their worship as Jehovah’s Witnesses. For those sentenced, their resolve to continue their religious activity means that they face the possibility of imprisonment as repeat offenders.
Victor Zhenkov, one of the attorneys in the case, stated: “I fear what the decision portends for Jehovah’s Witnesses in Russia. Law enforcement authorities in Taganrog and throughout Russia can use this decision in a propaganda campaign to continue harassing and persecuting Jehovah’s Witnesses with the real threat of imprisonment merely for practicing their faith.”
The Witnesses in Taganrog are appealing the decision to the Rostov Regional Court.
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