Leading evolutionary biologist James Shapiro has written a new very interesting but still basically wrong thinking article in Aeon, Evolution without accidents - Why Did Darwin's 20th Century Followers Get Evolution So Wrong, at https://aeon.co/essays/why-did-darwins-2...n-so-wrong .
Shapiro starts by pointing out how Barbara McClintock's discovery of genetic transposable elements (TEs) should have shown how incomplete the prevailing New Synthesis Darwinism was in that it claims that the only source of genetic variation is random mutations, in the semi-random walk process of RM + NS.
This is at least some progress, but nowhere near enough. Shapiro and other new wave evolutionists still cling to the traditional naturalistic aversion to any form of outside conscious intelligence being involved in evolution. Though it is obvious, he ignores the fact that intelligent design exists in nature, design that can't possibly be ascribed to the unconscious cellular gene-modification processes he goes into. Unlike random mutations, these processes can respond to immediate environmental pressures, but they do not have the needed foresight and imagination and other aspects of a true designing intelligence. You just can't squeeze intelligence with foresight out of basically mechanical processes like transposable elements, symbiosis, and horizontal DNA transfers.
The relatively simple bacterial flagellum is a perfect example, where the overall mechanism (including the reproduction subsystem) is irreducibly complex, meaning that if any part is removed the thing will not work - all the parts have to be present in the required arrangement or the thing is useless. A system that can't look ahead, and only adaptively responds to immediate stress, just couldn't build the flagellum and its various reproductive support subsystems. Some sort of mind with foresight had to visualize the overall requirements and the structures and processes needed to fulfill them. Shapiro can make a lot of generalizations but would be severely challenged if he was required to actually plot out how the flagellum could have come about through his various basically mechanical gene-modification processes.
Shapiro actually is rather vague and ambiguous in that he refers to "regulated biological entities" somehow generating complexly adaptive designs, without defining what these "entities" are and how they themselves came about.
(This post was last modified: 2023-07-10, 01:08 AM by nbtruthman. Edited 3 times in total.)
Shapiro starts by pointing out how Barbara McClintock's discovery of genetic transposable elements (TEs) should have shown how incomplete the prevailing New Synthesis Darwinism was in that it claims that the only source of genetic variation is random mutations, in the semi-random walk process of RM + NS.
Quote:"My own belief is that the reason for this willful neglect lies in the basic philosophical foundations of mainstream thinking about evolution, which requires a purely physical explanation for all evolutionary processes. The fact that TEs respond to stress indicates that they are regulated biological entities that play a sensory-guided role in survival and reproduction. The notion of controlled biological processes at the core of organic evolution is plainly incompatible with a purely physicalist explanation, such as random mutations plus natural selection.
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Genome modifications by transposable elements may be the best-known examples of evolutionary processes that have nothing to do with the gradual accumulation of random mutations, but genome sequencing has revealed many others, equally important. They include the symbiotic cell fusion about 2 billion years ago that introduced the bacterial ancestor of mitochondria into the eukaryote progenitor cell from which all forms of complex life would eventually evolve. They include instances in which fully evolved adaptations were acquired by horizontal DNA transfers across taxonomic boundaries, rather than through vertical inheritance directly from ancestors. They also include the evolution of Lego-like proteins, in which specific regions or ‘domains’ in a protein’s chain structure can migrate between molecules and add new functionalities to the recipient proteins. Finally, they include the recent and actively growing field investigating the multifarious functions of non-coding RNA (ncRNA) molecules transcribed in part from TEs and other repetitive DNA elements.
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Like horizontal DNA transfer, ‘domain shuffling’ involves inserting extended segments of protein-coding DNA in various locations in the genome. This means that cells can cut and splice their own DNA molecules, a capability that I call ‘natural genetic engineering’."
This is at least some progress, but nowhere near enough. Shapiro and other new wave evolutionists still cling to the traditional naturalistic aversion to any form of outside conscious intelligence being involved in evolution. Though it is obvious, he ignores the fact that intelligent design exists in nature, design that can't possibly be ascribed to the unconscious cellular gene-modification processes he goes into. Unlike random mutations, these processes can respond to immediate environmental pressures, but they do not have the needed foresight and imagination and other aspects of a true designing intelligence. You just can't squeeze intelligence with foresight out of basically mechanical processes like transposable elements, symbiosis, and horizontal DNA transfers.
The relatively simple bacterial flagellum is a perfect example, where the overall mechanism (including the reproduction subsystem) is irreducibly complex, meaning that if any part is removed the thing will not work - all the parts have to be present in the required arrangement or the thing is useless. A system that can't look ahead, and only adaptively responds to immediate stress, just couldn't build the flagellum and its various reproductive support subsystems. Some sort of mind with foresight had to visualize the overall requirements and the structures and processes needed to fulfill them. Shapiro can make a lot of generalizations but would be severely challenged if he was required to actually plot out how the flagellum could have come about through his various basically mechanical gene-modification processes.
Shapiro actually is rather vague and ambiguous in that he refers to "regulated biological entities" somehow generating complexly adaptive designs, without defining what these "entities" are and how they themselves came about.