On 4/24/2019 4:44 AM, smitra wrote:
https://www.youtube.com/watch?v=SNiiLfB8s0s
A thoroughly dishonest presentation.?? Pross selective misrepresents
quotes from people who are all arguing for the physical basis of life.??
He quotes Morowitz on the impossibility of randomly realizing an RNA,
but no origin of life theory proposes a one-step random assembly of
RNA.?? Naturally evolved RNA is long because it is not efficient.?? Paul
Schuster did an experiment to find what might be the shortest RNA that
could replicate in a soup of nucleotides (which can be created by a Urey
like environment).?? He used artificial selection to mimic natural
selection and found an RNA only?? Rez 220 units long that could
replicate.?? Reza Ghadiri did a similar experiment with amino acid soup
/Letters to Nature//
//Nature 382, 525 - 528 (08 August 1996); doi:10.1038/382525a0//
//David H. Lee, Juan R. Granja, Jose A. Martinez, Kay Severin & M. Reza
Ghadiri//
//Departments of Chemistry and Molecular Biology and the Skaggs
Institute for Chemical Biology, The Scripps Research Institute, La
Jolla, California 92037, USA//
//THE production of amino acids and their condensation to polypeptides
under plausibly prebiotic conditions have long been known1,2. But
despite the central importance of molecular self-replication in the
origin of life, the feasibility of peptide self-replication has not been
established experimentally3???6. Here we report an example of a
self-replicating peptide. We show that a 32-residue ??-helical peptide
based on the leucine-zipper domain of the yeast transcription factor
GCN4 can act autocatalytically in templating its own synthesis by
accelerating the thioester-promoted amide-bond condensation of 15- and
17-residue fragments in neutral, dilute aqueous solutions. The
self-replication process displays parabolic growth pattern with the
initial rates of product formation correlating with the square-root of
initial template concentration.
/Read Nick Lane's "The Vital Question" and watch his Royal Society
Lecture.?? Lane is of the metabolism-first school of abiogenesis.
https://royalsociety.org/science-events-and-lectures/2017/02/faraday-prize-lecture/
Brent
//
https://www.youtube.com/watch?v=zkGb12xBKlM
On 24-04-2019 09:54, 'Cosmin Visan' via Everything List wrote:
So ultimately they are not "artificial", but natural, grown through
biological processes, not assembled in a factory. Then they are
natural and are not made of atoms, but are made by invisible natural
processes that are also responsible for the workings of consciousness.
I think this fact must be stated out clearly: biology is not made out
of atoms! I think this is what confuses most people. People somehow
take for granted that biology is just atoms, and thus they don't
understand how consciousness can be immaterial if the brain is
material. That's the whole point: the brain is NOT material. Neither
biology generally. The development of a being is not lead by chemical
reactions, but chemical reactions are lead by invisible forces such
that they implement the shape of the being.
On Wednesday, 24 April 2019 10:12:49 UTC+3, Philip Thrift wrote:
This is the whole point:
The neuronal cells being replaced in the brain can't be made of
anything. The replacements (synthetic neurons) have to be made of
atoms/molecules such that they that replicate the actual chemical
processing abilities of the cells they are replacing.
- pt
On Wednesday, April 24, 2019 at 1:46:09 AM UTC-5, Cosmin Visan
wrote:
This is like saying: If you replace part of the computer screen with
drawings made on a piece of paper, what does this indicate ? Well...
it indicates that on the part replaced with the piece of paper,
nothing will happen anymore.
On Wednesday, 24 April 2019 01:41:14 UTC+3, stathisp wrote:
If we can replace part of the brain with an electronic component and
the person continues experiencing normal consciousness, what does
this indicate?
--
Stathis Papaioannou
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