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Embryology in the Quran: Difference between revisions
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Many apologists claim that 'alaqah in the Quran means a leech (in a metaphorical sense), and that this is similar to an embryo. However, unlike a leech, which simply sucks blood from its host, the embryo circulates and exchanges gases, nutrients and waste products with its mother. Most significantly, the placental membrane or barrier ensures that the embryo does not take from or exchange blood with its mother, who may have a different blood type.<ref>Barry Mitchell & Ram Sharma 2009. Embryology: An Illustrated Colour Text. Second Edition. Churchill Livingstone ElSevier. Page 10-12</ref> Furthermore, a leech attaches itself directly to the surface of its host. In contrast, the [[w:Blastocyst|blastocyst]] stage embryo implants into the uterine wall ([[w:Endometrium|endometrium]]) by means of an outer cell layer surrounding it, called the [[w:Syncytiotrophoblast|syncytiotrophoblast]]. It is the syncytiotrophoblast which invades the endometrium, burying the entire embryo within the wall (unlike a leech), establishes a circulatory connection, and will later form the outer layer of the [[w:Placenta#Development|placenta]]. | Many apologists claim that 'alaqah in the Quran means a leech (in a metaphorical sense), and that this is similar to an embryo. However, unlike a leech, which simply sucks blood from its host, the embryo circulates and exchanges gases, nutrients and waste products with its mother. Most significantly, the placental membrane or barrier ensures that the embryo does not take from or exchange blood with its mother, who may have a different blood type.<ref>Barry Mitchell & Ram Sharma 2009. Embryology: An Illustrated Colour Text. Second Edition. Churchill Livingstone ElSevier. Page 10-12</ref> Furthermore, a leech attaches itself directly to the surface of its host. In contrast, the [[w:Blastocyst|blastocyst]] stage embryo implants into the uterine wall ([[w:Endometrium|endometrium]]) by means of an outer cell layer surrounding it, called the [[w:Syncytiotrophoblast|syncytiotrophoblast]]. It is the syncytiotrophoblast which invades the endometrium, burying the entire embryo within the wall (unlike a leech), establishes a circulatory connection, and will later form the outer layer of the [[w:Placenta#Development|placenta]]. | ||
A leech has many characteristics such as size, behaviour, shape, color, appearance. It makes no sense for the author to have used 'alaqah in a metaphorical sense when his listeners could not be expected to know in what respect the analogy applies. It is no more than a Texan Sharpshooter fallacy<ref>"The Texas sharpshooter fallacy is an informal fallacy in which pieces of information that have no relationship to one another are called out for their similarities, and that similarity is used for claiming the existence of a pattern. This fallacy is the philosophical/rhetorical application of the multiple comparisons problem (in statistics) and apophenia (in cognitive psychology). It is related to the clustering illusion, which refers to the tendency in human cognition to interpret patterns where none actually exist. The name comes from a joke about a Texan who fires some shots at the side of a barn, then paints a target centered on the biggest cluster of hits and claims to be a sharpshooter."<br> | A leech has many characteristics such as size, behaviour, shape, color, appearance. It makes no sense for the author to have used 'alaqah in a metaphorical sense when his listeners could not be expected to know in what respect the analogy applies. It is no more than a Texan Sharpshooter fallacy<ref>"The Texas sharpshooter fallacy is an informal fallacy in which pieces of information that have no relationship to one another are called out for their similarities, and that similarity is used for claiming the existence of a pattern. This fallacy is the philosophical/rhetorical application of the multiple comparisons problem (in statistics) and apophenia (in cognitive psychology). It is related to the clustering illusion, which refers to the tendency in human cognition to interpret patterns where none actually exist. The name comes from a joke about a Texan who fires some shots at the side of a barn, then paints a target centered on the biggest cluster of hits and claims to be a sharpshooter."<br>[[w:Texas sharpshooter fallacy|Texas sharpshooter fallacy]]</ref>, typical of Islamic miracle claims, to choose one characteristic - shape - which to a very and arbitrarily limited degree has similarity with that of an embryo (in their eyes) and to then draw any conclusions. This is particularly so given that the early embryo passes through a wide range of shapes and that both a leech and human embryo are biological organisms. Moreover, when depicting the embryo such apologetics have to conveniently ignore the embryo's yolk sac, which gradually becomes incorporated into its developing gut. | ||
Above and beyond all of this, "leech" is not the most common meaning of this word; clot works much better here, and most translators including Arberry, Pickthall, and Sahih international all translate it this way. The translation of "leech", "leech-like embryo" or "embryo" only appeared in the modern age after the discoveries of embryology, and were not known in pre-modern translations. | Above and beyond all of this, "leech" is not the most common meaning of this word; clot works much better here, and most translators including Arberry, Pickthall, and Sahih international all translate it this way. The translation of "leech", "leech-like embryo" or "embryo" only appeared in the modern age after the discoveries of embryology, and were not known in pre-modern translations. | ||
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The scientific evidence shows that the development of cartilage/bone and muscles is contemporaneous. | The scientific evidence shows that the development of cartilage/bone and muscles is contemporaneous. | ||
A very detailed account of musculo-skeletal development in the human limb by clinical-geneticist Robert Jan Galjaard covers this subject.<ref>Galjaard, R.J.H. [http://repub.eur.nl/res/pub/10474/030924_Galjaard,%20Robert-Jan%20Harmen.pdf Mapping Studies of Congenital Limb Anomalies]. Ablasserdam: Haveka, B.V., 2003, page 16 [ | A very detailed account of musculo-skeletal development in the human limb by clinical-geneticist Robert Jan Galjaard covers this subject.<ref>Galjaard, R.J.H. [http://repub.eur.nl/res/pub/10474/030924_Galjaard,%20Robert-Jan%20Harmen.pdf Mapping Studies of Congenital Limb Anomalies]. Ablasserdam: Haveka, B.V., 2003, page 16 ([https://web.archive.org/web/20220409030333/https://repub.eur.nl/pub/10474/030924_Galjaard,%20Robert-Jan%20Harmen.pdf archive])</ref> It details that muscle precursor cells migrate from the somites into the limb buds (ca. day 26). This is well before the condensing core of mesenchyme has started to chondrify into cartilage bone models in the upper part of the upper limb (ca. day 37), followed by the lower part (ca. day 41). The myoblasts have grouped into distinct dorsal and ventral masses by that stage (they do so in the upper limb by day 36 and the start of chondrification according to Sivakumar et. al<ref>Sivakumar, B. et. al. ''Congenital Hand Differences'' in Farhadieh, R. et. al. (ed.) Plastic and Reconstructive Surgery: Approaches and Techniques, Chichester: Wiley, 2015, p.660 [https://books.google.co.uk/books?id=tCq9BgAAQBAJ&pg=PA660#v=onepage&q&f=false Google books preview]</ref>). The upper limbs later start to ossify (ca. day 54). Chondrification of mesenchyme, the grouping of myogenic masses, and ossification all occur in a proximal-distal order (upper to lower part of each limb). The digits of the hands only start to chondrify ca. day 51. | ||
Professor Peter Law concurs that myoblasts are found in the limb buds day 26.<ref>Law, Peter et al., ''Pioneering Human Myoblast Genome Therapy as a Platform Technology of Regenerative Medicine.'' In: Stem Cell Therapy. Erik Greer (Editor). Nova Science Publishers, Inc. 2006. Page 3.</ref> | Professor Peter Law concurs that myoblasts are found in the limb buds day 26.<ref>Law, Peter et al., ''Pioneering Human Myoblast Genome Therapy as a Platform Technology of Regenerative Medicine.'' In: Stem Cell Therapy. Erik Greer (Editor). Nova Science Publishers, Inc. 2006. Page 3.</ref> | ||