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Science Forum Index » Bio Evolution Forum » How quickly does the gene pool deteriorate when the weak sur
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| Tim Tyler |
Posted: Tue Jan 02, 2007 9:02 am |
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Kent Paul Dolan wrote:
Quote: Tim Tyler wrote:
John Wilkins wrote:
Eugenics is based on a misunderstanding, and in
fact rejection, of evolutionary theory.
Um, not according to the dictionary, it isn't:
[http://dictionary.reference.com/search?q=Eugenics]
Quote: Well, yes, it is. Look below, and see two uses of
"presumed". The presumptions of eugenics enforcers
typically have had little if anything to do with
"fitness" (whatever the might mean once a severe
case of civilization has set in) and everything to
do with "social (un)desirability".
Eugenicists have historically attempted to
breed race-related traits - and are well-
known for doing precisely that.
I fail to see how eugenics is based
on a misunderstanding, or a rejection,
of evolutionary theory - that thesis
seems extremely silly to me.
Quote: John's objection is spot on, which is why eugenics,
based on its sins of the past, is in such disrepute
today.
Nazi germany is probably the main reason
eugenics has a bad name today.
Quote: Sterilizing someone whose mental deficiency
is due to being choked by the umbilical cord at
birth, or partially suffocated by carbon monoxide in
a home accident during childhood, makes neither
genetic nor evolutionary sense, yet it sure is
"eugenics", boy, howdy.
My understanding is the eugenics has to
target heritable traits to qualify as such.
Killing or sterilizing on the basis of traits
that are /not/ heritable is not eugenics.
Of course umbilical suffocation and
childhood accidents may well have
some heritable component - though both
are likely to be selected against.
FWIW, *infanticide* of crippled offspring
by their mothers certainly /does/ make
evolutionary sense in animals that provide
parental care.
Resources that would be wasted on feeding
and raising them can then be diverted into
other existing or prospective offspring.
--
__________
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| Tim Tyler |
Posted: Tue Jan 02, 2007 9:02 am |
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John Wilkins wrote:
Quote: Tim Tyler <seemysig@cyberspace.org> wrote:
John Wilkins wrote:
Eugenics is based on a misunderstanding,
and in fact rejection, of evolutionary theory.
Um, not according to the dictionary, it isn't:
``Eugenics:
the study of or belief in the possibility of improving the
qualities of the human species or a human population, esp.
by such means as discouraging reproduction by persons
having genetic defects or presumed to have inheritable
undesirable traits (negative eugenics) or encouraging
reproduction by persons presumed to have inheritable
desirable traits (positive eugenics).''
- http://dictionary.reference.com/search?q=Eugenics
With respect, that definition, while accurate enough, is not based on
evolutionary theory. But as early as the mid-30s, Dobzhansky noted that
evolution occurred on species with genetic loads no better than ours,
which did not go extinct.
Eugenics is based on animal husbandry, and has been since the Spartans.
Right...
So do you also think that animal husbandry is based
on a "misunderstanding, and in fact rejection, of
evolutionary theory"?
Your original statement still seems ridiculous :-(
You subsequent comment suggests that perhaps
you are thinking that eugenic ideas are motivated
solely by the desire to prevent extinction via
a mutational meltdown.
If so, I can assure you that that is not the case.
--
__________
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| William Morse |
Posted: Wed Jan 03, 2007 8:46 am |
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Tim Tyler <seemysig@cyberspace.org> wrote in news:enea7c$1uks$1
@darwin.ediacara.org:
Quote: John Wilkins wrote:
Tim Tyler <seemysig@cyberspace.org> wrote:
John Wilkins wrote:
Eugenics is based on a misunderstanding,
and in fact rejection, of evolutionary theory.
Um, not according to the dictionary, it isn't:
``Eugenics:
the study of or belief in the possibility of improving the
qualities of the human species or a human population, esp.
by such means as discouraging reproduction by persons
having genetic defects or presumed to have inheritable
undesirable traits (negative eugenics) or encouraging
reproduction by persons presumed to have inheritable
desirable traits (positive eugenics).''
- http://dictionary.reference.com/search?q=Eugenics
With respect, that definition, while accurate enough, is not based on
evolutionary theory. But as early as the mid-30s, Dobzhansky noted
that
evolution occurred on species with genetic loads no better than ours,
which did not go extinct.
Eugenics is based on animal husbandry, and has been since the
Spartans.
Right...
So do you also think that animal husbandry is based
on a "misunderstanding, and in fact rejection, of
evolutionary theory"?
Animal husbandry uses selection to breed animals that are useful for
humans. The basic idea behind eugenics is to breed humans that are like
the ruling class, on the assumption that being like the ruling class will
make the bred humans useful.
Quote: Your original statement still seems ridiculous
His original statement, to amplify, is that eugenics assumes that
existing selective forces are not producing humans that are adapted to
their environment, and that the eugenicists have a better idea of what is
selective than natural selection. Seems spot on to me.
Quote: You subsequent comment suggests that perhaps
you are thinking that eugenic ideas are motivated
solely by the desire to prevent extinction via
a mutational meltdown.
If so, I can assure you that that is not the case.
Right. Eugenic ideas are motivated by the same thinking that gave us the
Third Reich, the Soviet Union under Lenin, and the invasion of Iraq by
the US - the thought that I know what is best for you, even if you
disagree. As my parents taught me, the road to hell is paved with good
intentions.
I do think humans will adopt "eugenic" solutions, in that they will start
to use genetic screening to pick which babies they will have. Their
choices may well not be the right ones, by yours, mine, Dr. John's or
even God's definition. But don't try telling them what the right
decisions are.
Yours,
Bill Morse |
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| Anthony Cerrato |
Posted: Wed Jan 03, 2007 8:46 am |
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"Tim Tyler" <seemysig@cyberspace.org> wrote in message
news:enc306$1mtv$1@darwin.ediacara.org...
[MASS SNIPPAGE]
Quote: Do we want to breed humans tailored so specifically
for difficult environments [deep ocean, Mars, Titan,
....] that they become separate species, or do we
want to eliminate human racial differences in hopes
that some magic in everyone looking alike and being
equally capable will somehow reduce human conflict?
The notion of 'separate species' started to lose its
meaning back when it became possible to transfer
genes between species.
Yes, our descendants will become specialised so that
they can occupy more niches - but that doesn't imply
that they won't be able to exchange genes. Now
the species barrier has been breached, gene trade
will escalate rapidly.
By contrast, eliminating human racial differences
is unlikely to happen because it is a silly goal.
For one thing, skin pigmentation differences exist
for a good adaptive reason, to allow humans to
occupy a wider range of niches.
Indeed! In a further future, genes will be traded and
bought, perhaps at minimal or no cost. Diversity will be
prized merely from a vanity viewpoint--species AND racial
changes will be prized for their utility.
In a far future, cosmetic genengineering will be a common
practice, with xenoforming for desired and added/modified
traits universally utilized for living in alien
environments. Blue-green eyes or gills...take what you like
and live where and how you like, in Earth's oceans or any
only minimally terraformed new planets (or space
environments.)
People will laugh at the fact that there were ever actual
conflicts between people regarding racial or other cosmetic
differences! )
.....tonyC
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| John Wilkins |
Posted: Wed Jan 03, 2007 8:46 am |
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Tim Tyler <seemysig@cyberspace.org> wrote:
Quote: John Wilkins wrote:
Tim Tyler <seemysig@cyberspace.org> wrote:
John Wilkins wrote:
Eugenics is based on a misunderstanding,
and in fact rejection, of evolutionary theory.
Um, not according to the dictionary, it isn't:
``Eugenics:
the study of or belief in the possibility of improving the
qualities of the human species or a human population, esp.
by such means as discouraging reproduction by persons
having genetic defects or presumed to have inheritable
undesirable traits (negative eugenics) or encouraging
reproduction by persons presumed to have inheritable
desirable traits (positive eugenics).''
- http://dictionary.reference.com/search?q=Eugenics
With respect, that definition, while accurate enough, is not based on
evolutionary theory. But as early as the mid-30s, Dobzhansky noted that
evolution occurred on species with genetic loads no better than ours,
which did not go extinct.
Eugenics is based on animal husbandry, and has been since the Spartans.
Right...
So do you also think that animal husbandry is based
on a "misunderstanding, and in fact rejection, of
evolutionary theory"?
Your original statement still seems ridiculous :-(
You subsequent comment suggests that perhaps
you are thinking that eugenic ideas are motivated
solely by the desire to prevent extinction via
a mutational meltdown.
If so, I can assure you that that is not the case.
The justification for eugenics has always been "racial health" or
something similar, and the standard view since Galton has been that
modern medicine or social conditions permit the survival of unfit
variants, which needs correction via (positive or negantive, depending
on the politics) eugenics.
Evolutionary theory, on the other hand, says that any variant that
spreads in the environments in which it finds itself, just *is* fit, by
definition. So if, to take a 17thC example, the Irish are outbreeding
the much fitter English aristocracy, then they happen to be fitter in
evolutionary terms, no matter how the English happen to view themselves.
It doesn't matter from an evolutionary perspective that the environment
in question is that of modern medicine, and more than it matters that a
robust beak finch morphology on the Galapagos Islands is fitter in a
short term drought. In that context, alleles that spread are,
definitionally, fitter.
Animal husbandry selects not for environmental fitness, but for the
purposes of breeders (farmers, meat wholsalers, etc.). One might argue
that this then becomes part of the fitness landscape of cows and sheep,
and I would argue that, but there is no absolute metric for fitness in
either case, which is the error of eugencis.
Some eugencis might in fact be quite reasonable. I think that
eliminating genetic diseases such as porphyria is a reasonable eugenic
project, so long as it can be done without infringing on the rights of
anyone, but mostly eugenic programs have an absolute fitness metric
(like "cretinism") that they seek to eliminate.
--
John S. Wilkins, Postdoctoral Research Fellow, Biohumanities Project
University of Queensland - Blog: scienceblogs.com/evolvingthoughts
"He used... sarcasm. He knew all the tricks, dramatic irony, metaphor,
bathos, puns, parody, litotes and... satire. He was vicious." |
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| Alan Meyer |
Posted: Thu Jan 04, 2007 8:58 am |
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wiseman wrote:
Quote: How bad is our gene pool in the west where the weak have as many
children as the strong? I look at the British royal family for example.
They are quite ugly and not that bright.
What an interesting example that is!
The British royal family is probably one of the most highly
engineered human families in existence. For most of its history,
new partners were carefully selected and only the most well
connected and "best" families were allowed to breed their sons
and daughters into it.
If they turn out to be dumb and ugly, that doesn't speak well for
our ability to select folks for breeding does it?
Quote: Does low intelligence, ugliness, bad teeth, etc become prevalent very
quickly.
Probably not. I would speculate that it takes many, many
generations. This is in part because genes don't disappear
quickly (see below), because it's not clear that any of these
traits are simply connected to individual genes, and because
there is no reason to believe that human females select males
with low intelligence, ugliness and bad teeth, or vice versa for
males selecting females, to breed with.
In fact I wouldn't be surprised if, in the very population that
the eugenicists are most eager to weed, selection for
intelligence, good looks, and good teeth is stronger than it is
in the British royal family.
Some of those low class, underprivileged, undereducated men and
women breeding in the slums that eugenicists want to bump off
(when they aren't after Jews, Gypsies, Tutsis, or whoever the
"inferior race" of the moment is) are probably smarter, stronger,
and handsomer than many of the folks who want to do away with
them.
Quote: When you look at animals, sometimes 80 percent die off in a
bad winter leaving only those with good genes.
Nope. The ones that die off (or more importantly, fail to breed)
for reasons other than bad luck are the ones who had a problem
with that particular winter. This is not at all the same thing
as having "good genes", whatever that means.
The survivors in turn might die off in a hot summer, or a wet
season, or a dry season, or a season with a particular set of
effects on the food they eat, etc. Two bad winters may kill off
two entirely different populations depending on what threat the
bad winter actually poses - for example a "bad" winter might
freeze the local water sources, might cover the local foodstuffs
with snow, might chill the animals too much because of high
winds, might have too much rain, too little rain, too much cloud
cover, too little cloud cover, and on and on. Each threat
attacks a different subpopulation.
Also, and very importantly, unless the population involved is
very small, the genes of the killed off animals will not
disappear. The various alleles probably all still exist in other
parts of the population which happened to have other beneficial
genes. They will be expressed again when conditions are right
and may (and usually do) come to the fore many generations later.
Quote: At some point, wont we
have to start doing managing genetics.
I'm not sure what you mean by "have to". Clearly we won't have
to. But I'm guessing that we will for the same reason that we
wind up doing almost anything that we _can_ do. Genetic
engineering of plants and some protists and bacteria is already a
fact of life even though no one took a vote on it - though maybe
I just wasn't there when the votes were taken. :)
Quote: Was Hitler right on this point? Churchill , as well?
Absolutely, definitively, unquestionably, NO - for reasons
everyone else has already given.
And just imagine where we'd be today in a world of little
Hitlers, Goerings, Goebbels, Himmlers, and the rest of that
disgusting crew.
Alan |
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| John Wilkins |
Posted: Thu Jan 04, 2007 8:58 am |
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William Morse <wdmorse@twcny.rr.com> wrote:
Quote: Animal husbandry uses selection to breed animals that are useful for
humans. The basic idea behind eugenics is to breed humans that are like
the ruling class, on the assumption that being like the ruling class will
make the bred humans useful.
Actually, some eugenics programs, such as the Spartans', also sought to
breed useful "lower" classes. Plato's Repulic has the best enunciation
of that program.
--
John S. Wilkins, Postdoctoral Research Fellow, Biohumanities Project
University of Queensland - Blog: scienceblogs.com/evolvingthoughts
"He used... sarcasm. He knew all the tricks, dramatic irony, metaphor,
bathos, puns, parody, litotes and... satire. He was vicious." |
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| Tim Tyler |
Posted: Thu Jan 04, 2007 8:58 am |
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William Morse wrote:
Quote: Tim Tyler <seemysig@cyberspace.org> wrote in news:enea7c$1uks$1
John Wilkins wrote:
Tim Tyler <seemysig@cyberspace.org> wrote:
John Wilkins wrote:
Eugenics is based on a misunderstanding,
and in fact rejection, of evolutionary theory.
Um, not according to the dictionary, it isn't:
``Eugenics:
the study of or belief in the possibility of improving the
qualities of the human species or a human population, esp.
by such means as discouraging reproduction by persons
having genetic defects or presumed to have inheritable
undesirable traits (negative eugenics) or encouraging
reproduction by persons presumed to have inheritable
desirable traits (positive eugenics).''
- http://dictionary.reference.com/search?q=Eugenics
With respect, that definition, while accurate enough, is not based on
evolutionary theory. But as early as the mid-30s, Dobzhansky noted
that evolution occurred on species with genetic loads no better
than ours,
which did not go extinct.
Eugenics is based on animal husbandry, and has been since the
Spartans.
Right...
So do you also think that animal husbandry is based
on a "misunderstanding, and in fact rejection, of
evolutionary theory"?
Animal husbandry uses selection to breed animals that are
useful for humans. The basic idea behind eugenics is to
breed humans that are like the ruling class, on the
assumption that being like the ruling class will make the
bred humans useful.
That is not the basic idea behind eugenics.
Eugenics is about improving the human race -
especially by using techniques like selection
and breeding.
Quote: Your original statement still seems ridiculous :-(
His original statement, to amplify, is that eugenics
assumes that existing selective forces are not producing
humans that are adapted to their environment [...]
It is *obvious* that humans are maladapted. They
live in a rapidly-changing environment, and
evolution via natural selection is an /extremely/
slow process.
Quote: [...] and that the eugenicists have a better
idea of what is selective than natural selection.
Seems spot on to me.
John's original statement, to actually quote was:
``Eugenics is based on a misunderstanding,
and in fact rejection, of evolutionary theory.''
Your 'amplification' says something totally
different - and thus hardly seems worth
discussing further.
Quote: You subsequent comment suggests that perhaps
you are thinking that eugenic ideas are motivated
solely by the desire to prevent extinction via
a mutational meltdown.
If so, I can assure you that that is not the case.
Right. Eugenic ideas are motivated by the same thinking
that gave us the Third Reich, the Soviet Union under Lenin,
and the invasion of Iraq by the US - the thought that I
know what is best for you, even if you disagree. As my
parents taught me, the road to hell is paved with good
intentions.
It seems as though you are mixing positive and negative
eugenics together there.
Negative eugenics involves taxing the disfavoured.
Positive eugenics involved donating to the favoured.
AFAICS, we are going to be seeing a lot more of
both types of eugenics in the future.
--
__________
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| Tim Tyler |
Posted: Thu Jan 04, 2007 8:58 am |
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John Wilkins wrote:
Quote: Tim Tyler <seemysig@cyberspace.org> wrote:
John Wilkins wrote:
Tim Tyler <seemysig@cyberspace.org> wrote:
John Wilkins wrote:
Eugenics is based on a misunderstanding,
and in fact rejection, of evolutionary theory.
Um, not according to the dictionary, it isn't:
``Eugenics:
the study of or belief in the possibility of improving the
qualities of the human species or a human population, esp.
by such means as discouraging reproduction by persons
having genetic defects or presumed to have inheritable
undesirable traits (negative eugenics) or encouraging
reproduction by persons presumed to have inheritable
desirable traits (positive eugenics).''
- http://dictionary.reference.com/search?q=Eugenics
[...]
Quote: Eugenics is based on animal husbandry, and has been
since the Spartans.
Right...
So do you also think that animal husbandry is based
on a "misunderstanding, and in fact rejection, of
evolutionary theory"?
Your original statement still seems ridiculous :-(
You subsequent comment suggests that perhaps
you are thinking that eugenic ideas are motivated
solely by the desire to prevent extinction via
a mutational meltdown.
If so, I can assure you that that is not the case.
The justification for eugenics has always been "racial
health" or something similar, and the standard view since
Galton has been that modern medicine or social conditions
permit the survival of unfit variants, which needs
correction via (positive or negantive, depending on the
politics) eugenics.
Evolutionary theory, on the other hand, says that any
variant that spreads in the environments in which it finds
itself, just *is* fit, by definition. So if, to take a
17thC example, the Irish are outbreeding the much fitter
English aristocracy, then they happen to be fitter in
evolutionary terms, no matter how the English happen to
view themselves.
It doesn't matter from an evolutionary perspective that the
environment in question is that of modern medicine, and
more than it matters that a robust beak finch morphology on
the Galapagos Islands is fitter in a short term drought. In
that context, alleles that spread are, definitionally,
fitter.
Animal husbandry selects not for environmental fitness, but
for the purposes of breeders (farmers, meat wholsalers,
etc.). One might argue that this then becomes part of the
fitness landscape of cows and sheep, and I would argue
that, but there is no absolute metric for fitness in either
case, which is the error of eugencis.
I'm still rather in the dark about whether you
also think that animal husbandry is based on a
"misunderstanding, and in fact rejection, of
evolutionary theory".
To clarify what ought to be obvious:
Neither animal breeding nor eugenics have
any quarrel with Darwin's theory.
Neither animal breeding nor eugenics are
based on misunderstandings.
Both seek to influence the fitness metric -
to affect what is selectively favoured.
Neither makes philosophical assumptions about
"absolute metrics for fitness" - both simply
breed and select for traits believed to be
desirable by those doing the breeding.
Whether there is an "absolute metric for fitness"
is an interesting philosophical question:
I'm sure advanced aliens would be able to wipe us
out - just as modern ecosystems would successfully
obliterate any three billion year old ones.
Probably fitness is not entirely a function of
the environment - some creatures and ecosystems
are just plain better than other ones - when
the environment is simply "our universe".
If belief in an "absolute metric for fitness"
is supposed to be "the error of eugenics",
then - aside from the issue of whether eugencists
actually believe in it - one thing that is not
very clear is whether it is actually an error.
Quote: Some eugencis might in fact be quite reasonable.
[...]
Indeed.
--
__________
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| Larry Moran |
Posted: Thu Jan 04, 2007 8:58 am |
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On Wed, 3 Jan 2007 13:46:59 -0500 (EST),
John Wilkins <j.wilkins1@uq.edu.au> wrote:
[snip]
Quote: Evolutionary theory, on the other hand, says that any variant that
spreads in the environments in which it finds itself, just *is* fit, by
definition.
Hmmmmmmm .....
Never mind. Carry on. You're incorrigible. :-)
Larry Moran |
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| John Wilkins |
Posted: Thu Jan 04, 2007 8:57 pm |
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Larry Moran <lamoran@bioinfo.med.utoronto.ca> wrote:
Quote: On Wed, 3 Jan 2007 13:46:59 -0500 (EST),
John Wilkins <j.wilkins1@uq.edu.au> wrote:
[snip]
Evolutionary theory, on the other hand, says that any variant that
spreads in the environments in which it finds itself, just *is* fit, by
definition.
Hmmmmmmm .....
Never mind. Carry on. You're incorrigible.
My mistake. I meant under selection pressures, of course. Or do I?
Fitness is a property of organisms in virtue of their long term
reproduction, or so I'm told. It doesn't thereby mean that the number of
progeny they have is directly due to selection. I'll have to think this
through.
--
John S. Wilkins, Postdoctoral Research Fellow, Biohumanities Project
University of Queensland - Blog: scienceblogs.com/evolvingthoughts
"He used... sarcasm. He knew all the tricks, dramatic irony, metaphor,
bathos, puns, parody, litotes and... satire. He was vicious." |
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| Kent Paul Dolan |
Posted: Fri Jan 05, 2007 7:19 am |
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Alan Meyer wrote:
Quote: wiseman wrote:
How bad is our gene pool in the west where the
weak have as many children as the strong? I look
at the British royal family for example. They
are quite ugly and not that bright.
What an interesting example that is!
The British royal family is probably one of the
most highly engineered human families in
existence. For most of its history, new partners
were carefully selected and only the most well
connected and "best" families were allowed to
breed their sons and daughters into it.
If they turn out to be dumb and ugly, that doesn't
speak well for our ability to select folks for
breeding does it?
What your analysis misses is that the breeding
selection criteria used were NOT beauty or
intelligence or common sense or moral behavior.
The selection criteria were almost always either
"gives the best political alliance" or "combines the
most numerous traceable bloodlines with rights of
inheritance to the throne" (to avoid wars of
succession being instigated by families with some
claims to the throne feeling "left out").
Since among other things that frequently involved
marriage between close relatives, the outcome you
see is just what one would expect from too close
inbreeding.
Terms like "ugly", "stupid", and "malformed" spring
easily to the onlookers' minds in contemplating the
outcome.
I seem to recall that Diana was chosen in part to
explicitly overcome these artifacts of history.
The results, in her offspring, seem to confirm the
wisdom of that choice. We don't yet know how smart
they are, but at least they're not quite butt ugly.
xanthian. |
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| Entertained by my own EIM |
Posted: Sat Jan 06, 2007 8:04 pm |
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"Tim Tyler" <seemysig@cyberspace.org> wrote in message
news:enjipg$2ru$1@darwin.ediacara.org...
Quote: William Morse wrote:
Tim Tyler <seemysig@cyberspace.org> wrote in news:enea7c$1uks$1
John Wilkins wrote:
Tim Tyler <seemysig@cyberspace.org> wrote:
John Wilkins wrote:
It is *obvious* that humans are maladapted. They
live in a rapidly-changing environment, and
evolution via natural selection is an /extremely/
slow process.
I can only agree with you about that we (the human species) are maladapted
(or less than ~ideally~ adapted).
However, we are also still "fit enough".
Specifically, mainly the members of the global human population that are
uneducated, technologically poor and/or religiously motivated to be
'Edserishly fit' (i.e. to be high-frequency-reproducers), are.
P |
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| Kent Paul Dolan |
Posted: Sun Jan 07, 2007 3:36 pm |
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Tim Tyler wrote:
Quote: It is *obvious* that humans are maladapted. They
live in a rapidly-changing environment, and
evolution via natural selection is an /extremely/
slow process.
That's nonsense, Tim. In the sense you use it, _any_
species is "obviously maladapted", since no species
ever has had sufficient time perfectly to adapt to
its always changing environment. Used that way,
"maladapted" becomes a meaningless tautology.
The "environment" to which humans adapt today is
almost entirely human culture, and adaptation to
human culture occurs in meme-space, not in
gene-space. "Natural selection" in meme-space is
incredibly rapid, because it is the memes that are
being evolved, not the meat-package, idea replacing
superseded idea handfuls to thousands of times in
the same individual's one lifetime. The result, in
meat-package reproductive success, is moreover a
sampling of the particular curve through meme-space
the individul occupies during the reproductive
interval, and does not have much relation to either
the initial or the final meme-space location of the
individual.
You really can't figure this stuff out if you stay
stuck in the old conceptualizations.
Stuck as with your views on eugenics, which looks
like a feasible idea right up until you have to ask
yourself "who will guard the guardians" and realize
that eugenics can never possibly work, because there
is no one safely to be trusted with that much power.
HTH
xanthian. |
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| William Morse |
Posted: Fri Jan 12, 2007 7:46 am |
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Guest
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"Kent Paul Dolan" <xanthian@well.com> wrote in news:ens76u$2uuu$1
@darwin.ediacara.org:
Quote: Tim Tyler wrote:
It is *obvious* that humans are maladapted. They
live in a rapidly-changing environment, and
evolution via natural selection is an /extremely/
slow process.
That's nonsense, Tim. In the sense you use it, _any_
species is "obviously maladapted", since no species
ever has had sufficient time perfectly to adapt to
its always changing environment. Used that way,
"maladapted" becomes a meaningless tautology.
The "environment" to which humans adapt today is
almost entirely human culture, and adaptation to
human culture occurs in meme-space, not in
gene-space. "Natural selection" in meme-space is
incredibly rapid, because it is the memes that are
being evolved, not the meat-package, idea replacing
superseded idea handfuls to thousands of times in
the same individual's one lifetime. The result, in
meat-package reproductive success, is moreover a
sampling of the particular curve through meme-space
the individul occupies during the reproductive
interval, and does not have much relation to either
the initial or the final meme-space location of the
individual.
You really can't figure this stuff out if you stay
stuck in the old conceptualizations.
Stuck as with your views on eugenics, which looks
like a feasible idea right up until you have to ask
yourself "who will guard the guardians" and realize
that eugenics can never possibly work, because there
is no one safely to be trusted with that much power.
Well said. And I think the problem with eugenics is not only who will
guard the guardians, but also that the people with the best of intentions
may be stuck in old conceptualizations. The failure of communism was due
to both of these effects - that those administering the system were
subject to corruption, and that those administering the system could not
make decisions as well as the market. Eugenics assumes that a single
decision maker knows what is best for humanity, vs. natural selection
which does not. In the analogous world of economics, this has been tried
and shown not to work.
Yours,
Bill Morse |
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