T
Tom Gardner
Guest
On 25/03/22 14:47, jlarkin@highlandsniptechnology.com wrote:
That\'s mere repetition of your same old tired tropes, indicating
that you are unable and/or unwilling to listen, think, change your
ideas.
Maybe /you/ are sick or something. That makes people depressed and
crabby.
On Fri, 25 Mar 2022 11:19:49 +0100, David Brown
david.brown@hesbynett.no> wrote:
On 24/03/2022 23:58, John Larkin wrote:
On Thu, 24 Mar 2022 21:54:53 +0100, David Brown
david.brown@hesbynett.no> wrote:
On 24/03/2022 17:14, jlarkin@highlandsniptechnology.com wrote:
On Thu, 24 Mar 2022 10:00:26 +0100, David Brown
david.brown@hesbynett.no> wrote:
On 23/03/2022 20:32, John Larkin wrote:
On Wed, 23 Mar 2022 17:46:28 +0000, Tom Gardner
spamjunk@blueyonder.co.uk> wrote:
The Blind Watchmaker
I read that, and The Selfish Gene. They were qualitative, repetitious,
and boring. A few pages could have made all his points. Hardly subtle.
And yet you missed all his points.
He only had a couple, none original. Maybe you can summarize his many
original ideas for us.
I have not suggested that he had many ideas. Nor have I suggested that
any of his ideas are original. (Nor am I suggesting that he /hasn\'t/
had many original ideas.)
I merely said you missed his points.
The main point of \"The Blind Watchmaker\" is that there is no such thing
as \"irreducible complexity\" - complex things can evolve from simple
things. Things that might look \"all or nothing\" at first sight, can
develop through evolution. The classic example is the eye.
\"Intelligent design\" fans like to claim \"there\'s no use for half an eye,
therefore the eye could not have evolved\" - but they are totally and
completely wrong, which is easy to demonstrate by looking at the range
of currently living organisms with sight organs that are at different
places on the path between light-sensitive chemicals and advanced eyes.
That is definitely /not/ an original Dawkins idea - Darwin considered it
too, along with every biologist in between.
Apparently, however, it still baffles you.
There is a clear evolutionary path for an eye, with many actual living
examples along the way.
Yes.
It\'s important to remember that the current living examples show how the
current human eye (for example) /might/ have evolved - not how it /did/
evolve. We can look at a nautilus with a \"pin-hole camera\" eye and
understand that was a likely stage in the evolution of the lens eye, but
we did not evolve from modern-day nautiluses.
The replication mechanism for DNA is not so friendly to incremental
design
\"Design\" is a loaded word here - if you used it to mean \"actively
designed by something or someone\", you\'re showing that you still don\'t
grok evolution. If you really meant \"incremental evolution\", then don\'t
write \"design\". Your reputation for confusion, misunderstanding, and a
belief it \"God did it\" precedes you - if you don\'t want to provoke
mocking, be more accurate in what you write.
What makes you say that the current modern mechanism for DNA replication
is not \"friendly\" to incremental evolution? All you can say is that no
one has proposed a plausible development pathway so far - or at fact,
merely none that /you/ have heard of. (I haven\'t heard of one either,
but I know the sum of human knowledge extends somewhat beyond my own
personal knowledge.)
There are three big challenges in looking at the evolutionary history
here. One is that this is all done at the molecular level and happens
fast - it is experimentally extremely challenging to observe what is
really happening.
Secondly, DNA as a genetic structure is extraordinarily successful. If
the RNA World hypothesis is a good approximation of the early life on
earth, then once DNA systems evolved they out-competed RNA-based
lifeforms so completely that there are no traces left (found so far) in
the modern ecosystem. There could have been all sorts of basis for life
in the early history of the earth - we only know about the ones that
survived.
Thirdly, the organisms of that time were very small, and there can be no
fossil records as direct evidence. We have a few ancient rocks where
certain minerals or patterns in the rocks can reasonably be interpreted
as evidence of early microbial life, but that\'s the best we can get -
there is no conceivable way to know if they used DNA or some precursor.
We can, however, look at DNA replication mechanisms in different living
organisms to get some ideas. Roughly speaking, prokaryote and eukaryote
DNS replication has some major differences as well as many similarities.
There are also differences between some groups of prokaryotes. This
gives a good starting point for the evolution from our common ancestor
going forward. We can also look at organisms that have slightly
different variations of the usual DNA base pairs (such as some
bacteriophages that have an alternative form of the \"A\" letter). All
these variations makes it clear that what we have in our own cells is
most certainly not \"irreducible complexity\" or \"all or nothing\".
So how did DNA replication evolve? The correct answer is we don\'t know,
and probably never will know how it /did/ evolve. But we can work
towards better answers for how it /might/ have evolved.
Throwing our arms up and saying \"it\'s all so amazing - it must have been
a god\" is not helpful. (And I don\'t care if you refer to a Christian
god, a Hindu god, an alien robot, intelligent DNA, conscious electrons,
or any other super-natural super-powerful super-intelligent
super-designer - it\'s all the same principle with different names and
different details.)
https://www.youtube.com/watch?v=fpHaxzroYxg
Fun stuff at 9:00.
Yes, it\'s amazing stuff, and fun to watch. It does not in any way
collaborate your idea.
You\'re not interested in biology or cool mechanisms or design,
electronic or other wise. You certainly don\'t delight in ideas or fun
machines, or much of anything as far as I can tell.
You hate ideas and speculation.
You seem to delight only in insults. You are just a bitchy old hen.
Maybe you are sick or something. That makes people depressed and
crabby.
That\'s mere repetition of your same old tired tropes, indicating
that you are unable and/or unwilling to listen, think, change your
ideas.
Maybe /you/ are sick or something. That makes people depressed and
crabby.