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The contemporary standard theory explaining the evolution
of species with the natural selection between competiting forms
(1)
is not sufficient as a general paradigma.
This article proposes a change of view by which the feedback mechanism
provided by the loop closed with heriting appears as the main engine of
the evolution.
The concrete phenotype is still shaped by the natural selection.
With a new view explaining some phenomena appears more natural
and easier to undestand.
- The engine of evolution
- Why is the competition model insufficient
- The feedback model
- The natural spectrum
- Why sytheses come about
- Examples
- The paaring behaviour
- Sudden evolution jumps and the speciation
- The emergence of life on the earth
- The hypothesis of god and the emergence of language
- The noncoding DNA
- Regaining control over social systems
- The evolving planet - What comes next after humans ?
- Conclusions
- Summary and the outlook on future unifications
- FAQ - frequently asked questions
The engine of evolution
The Theory of Evolution (ToE)
build on the work by Charles Darwin explains
the evolution as a aggregation of small changes,
which appeared more efficient in the competition between many organisms.
The so called "modern synthesis" unified the
work of many scientists adding beside
the natural selection also
the genetic drift as another possible
mechanism promoting evolution. Mid 60-ties after the
DNA discovery a gene-centric view has been added.
Still the main engine of the evolution is considered to be the competition
between many forms.
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Why is the competition model insufficient
The ToE with the natural selection beeing the main evolution
mechanism, as defined above has been claimed to be insufficient
in importand cases. A vivid discussion in science and in the society
generally still holds on.
Below I list phenomena which explanation in the standard paradigma of ToE
appears not natural nor strightforward, which on the other hand the model
presented in this article claims to explain much easier.
Pairing behaviour in biology
The diversity of forms evolved around pairing behaviour seems to
be denied by the urge of efficiency stemming from natural selection.
No one knows for sure why a peacock has a long tail
nor why a deer carries antlers.
The choice made by the female proposed as an explanation
lacks a logical cause and the gene drift
(2)
alone
does not explain why these appearences are so strong and important
in almost every specie. Also the homosexuality belongs to this cathegory
(3)
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Authors relying on ToE suggest to explain homosexuality with
the benefit provided by the common upbringing children. Yet
this argument explains only the friendship and not the erotical charm. |
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Sudden jumps of evolution
The fossil records suggest vivid developements in the evolution of species,
which take place suddenly and in which new species appear,
and long periods without significant change beween them.
Changes in the environment (e.g. climat) has been proposed as a cause
for these "jumps", but a true link has never been demonstrated.
(4)
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Stratigrafic convention
naming periods in the earth history with eons: precambrian, phanerozoic, cenozoic,
and their subdivisions has been chosen in the way which signs discontinuities
in fossil records, some of which point on huge overall changes in the whole
biosphere.
Yet the temperature and sea level diagrams are continuous on the borders
between these periods. Thus no correlation between jumps of evolution
and the clima is evident. |
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The origin of the DNA-machinery
It is ofter argued that the evolution can due to ToE only take place
when it's subject (here the DNA-machinery) already exists. Yet why did
it emerged at all ?
Appearing of some primary chemical cycles
(3)
seems not
to be explained by ToE in convincing way. Still scientists
dispute if it was a rare event, which took place by chance
or it was a necessity.
Social systems, the evolution of culture
The mechanism based on the natural selection
proposed by ToE should be in principle also applicable to the evolution
of a human culture, of social and economical systems, etc.,
but ToE seems to fail to explain these processes sufficently.
There seem to be no specie competiting with humans,
which caused a natural selection nor a genetic drift strong enough
to promote the emergence of human language.
Evolution with no competition pressure at all
Even without any competiting subjects the evolution can take place
and new complexity may emerge.
Some examples from the points above fall into this cathegory.
Others are: erobering new environments were the pure
number of ressources excludes any selection pressure.
Why did organisms erobering new continents or comming out of the ocean
aquired new abilities if no selection pressure existed at the beginning
of these expansions ?
The standard answere says that in the new environment survive best
adopted, but the problem appears if the worst adoped survive too.
One evolving organism
Not only without competitors but also without any outer environment
the evolution of a single system is (internally) possible.
An example is given by the hypothesis of Gaia
describing the evolution of the biosphere as a whole, which
cannot be reduced to nor explained by the evolution of it's parts.
Other examples regarding emergence of new synthesing systems
are the emergence of thallus and generally
multicellular organisms.
The proper model of evolution should at least suggest a mechanism
with which evolving parts (like species or cells) cause the new unifying
complexity (like an ecosystem or thallus) to emerge. By the standard ToE
evolving parts might promote new comprexity or cause a selfdestruction
of a whole such organism equally probable.
The above list gives items at different abstraction levels,
which also partially overlap. To this phenomena list one may add
as a seventh point a general problem stating that:
The contemporary standard caueses misundestandings.
Misundestandings of the theory of evolution (ToE) are
well known.
(5)
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A good example is the situation about
Richard Dawking's
gene centered view of evolution
in which he asks the question if the subject of natural selection
are organisms, groups of organisms, species, or just individuial genes,
even if this is not the valid alternative. Genes and organisms are aspects
of the same selection yet on different organisation levels.
Another example is the genetic drift. It covers possibly up to 80 %
genome changes in which no competition takes place and it must therefore be
treated as another mechanism alternative to the natural selection.
Evolution with many mechanisms seams not to be the best paradigma. |
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This text claims to show that these misundestandings have the common root:
Elements of the theory have improper balance of importance -
some without which the theory works well are positioned in the center
of considerations and some other crucial aspects are spelled out
as if they where secondary.
The ToE surely partially touches these objections, but the solutions
proposed seem at least not to be stright, efficient and very
convincing. They seem to neglect somehow the true cause of change.
At a more abstract level this cause yet possibly exists.
(6)
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Traditionally evolutionists deny a possibility of
another cause promoting evolutionary emergence of new complexity
while rejecting objections from creationists. |
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The feedback model
As stated above the nature shows tendency to
evolve towards more complexity even beyond the aplicability
of the natural selection mechanism. How does this come about ?
This text pays a special attension to the self-referencing feedback
loops. One such obvious feedback loop is closed by inheriting DNA
by the organisms in the next generation.
These loops are naturally promoting self-amplification of forms.
The reason for this amplification is the nature of a loop itself
which is closed by passing functionalities to the next cycle.
The biological evolution is build upon such cycles.
Thus in living organisms the natural feedback is realised by successing
and amplifying functionalities stored in DNA (inheritance).
Parents bring up children, which can be considered to be copies similar
to themselves.
In the EbS model the natural selection remains the main mechanism shaping
a concrete phenotype. It curves the individual species out of the stream
of generation cycles. Yet the natural selection is not a neccessary condition
for the evolution to take place.
Without it the evolution promoted by self-reference simply fills all
possibilities spreading around so far as it reaches limits
(like selection condtions).
Aldow the ineritance plays in the evolution of organisms undeniably
the central role traditionally the natural selection has been put
in the middle of the ToE description. This caused the self-amplification,
which the model presented here stresses to be overseen. As a consequence
the whole theory was widely half-undestood in the society and importand
phenomena has been half-explained by the science.
The self-reference (or feedback) model (EbS) on the other hand demonstrates
more clear, what has (partially) already been known that:
- The power of evolution comes from the sun supplying
the inheritance circles with energy. Without it no evolution
(even with the best selection conditions) is ever possible.
- Even without the natural selection the evolution
is well possible. The genetic drift is an example.
- It shows toward extensions capable to explain social
phenomena and the possible future evolution of our planet
as a whole.
- It suggests mathematical means to cope with evolution
of a species pool filling a chosen ecosystem.
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The natural spectrum
To demonstrate how the feedback engine works let us consider as an
example an electric amplifier fed back through the microphone by the
sound that the loud speaker is producing. Obviously some high tone emerges.
The control theory distingushes
between a positive and a negative feedback. The expotential
growth (explosion) is the consequence of the first one,
while the steady vibration is the consequence of the second.
Considering a feedback engine of a whole ecosystem
is much more complex, but some clues are seen immediately.
One can argue that the spectrum of some distinct "tones"
(called species) with only small information transfere
(gene transfere) beteewn them must come about. Why is it so ?
Without giving the strict proof this article suggests that in
any given initial random distribution some minima and maxima appear
just by definition of a distribution variety. They must further
contract and posess thus fixpoints
(8)
identified
in the biology as individual species.
The computational methods can in principle be applied to judge about it
what species spectrum will emerge. For the whole ecosphere
some astronomical data like the day-night rythmus,
the energy flux from the sun, etc. could be the bundary conditions.
Yet the true "mystery" appears when:
- Different abstraction levels are considerd.
i.e. organisms consists one of the others.
- The biosphere is astronomically stabile,
which makes the developement direction and complexity less
dependand on the outer influence.
Therefore computations for limited ecosystems might be more
successfull.
Let us see what consequences the mathematical model has on speciation.
From the described contractions in the spiecies spectrum one may follow,
that individual species will be more and more distinct from each other.
Practically this means, that a gen flow between species will be weaker
and weaker during eons. This explaines why the gen flow in microworld
is significantly bigger than in the macroscale
- the microworld is simply much elder.
Why sytheses come about
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Spontaneous sythese
It is worth to consider why and how the complexity
of subsystems contribute to a new system (new feedback link).
Truely the sudden emergence of a synthesizing system may
appear as a miracle if the former growth of it's parts is disregarded.
Yet even if subsystems are known the emergence of a new feedback link
appears mysterious for a human. This is:
- partially due to the time scale of such a link creation,
which compared with a steady functioning inheritance circle
resembles naturally a jump.
- due to the human tendency to search for reasons,
which observing the mechanism only partially suggests
some "purpose of the evolution".
(9)
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The cause of this mistake is suggested deeper in chapter 3.4. |
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Yet some unexplained rest still remains. Let us left all known
mechanisms causing change aside and see if an evolution is still
possible. To do this let's start with the
Hardy-Weinberg equilibrium
The principle defining this equilibrium demands:
- random mating
- no mutation
- no migration
- large population
- and no selection pressure
The principle says that genotype frequences remain constant under
such condition. This is often undestood, as if no evolvment is possible
at all.
Yet in a feedback model a significant change do takes place
even under such conditions ! The population is growing explosively !
Surely the Hardy-Weinberg Principle remains valid as a mathamatical
identity.
Still most people won't even call is an evolution. It just the
increase in population size. Systems of many semi-identical individuals posess
an importand feature, which one such individuum don't have.
It has a drastically increased susceptibility to the outer
environment influences. To see this for a physicist is easy (think of
an frequency comb). For a non-physicst
ask a question why a slide caliper with a dense pitch measures
much more exact than a simple scale. There are new interferences,
which appear now. While still no mutation and no selection pressure
on individuals exists, some new "pressure" on an ensamble as a whole
is appearing. There is only one step more needed to follow that
such a system in Hardy-Weinberg equilibruim do evolves in a new
super-system.
Til now we considered identical individuals and no further evolution
seemed possible. But the symmetry of identical individuals can under
some circumstances break spontaneously. Imagine as an example that
these individuals specialize in their different roles in a group.
Then a new super-system appears without natural selection and possibly
even without an outer environment. We call such a situation a spontaneous
synthesis.
Examples
This chapter is providing examples,
in which explanation, which the evolution by self-reference model (EbS)
offers seems to be more successfull than the standard theory (ToE).
The paaring behaviour
Let us demonstrate how the EbS explains the diversity
in paaring behaviours. The fertilisation poses obviously a bottleneck
in the generation cycle: A small amount of substance with DNA
is transfered which has wast conseqences to the new organism (new cycle).
A huge pressure from the whole self-refering loop concentrates at
this point. A grown up male and female posess enought ressources
to realise and to amplify the behaviour which ever appears. Each
must end with the fertilisation yet.
As a consequence otherwise strange behaviours are amplified
equally often as the strightest one.
For a deer to carry antlers is just not difficult enought
to stand this pressure.
(10)
(11)
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Also P.J.Weatherhead and R.J.Robertson pointed with their
sexy son hypothesis on some self-reference
as an explanation for the sexual behaviour. |
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In a more pictorial metapher one can compare this bottleneck situation
with daming up a river by dam, which causes it to overflow.
An evolution perpendicular to the direction, which the main
feedback cycle (main stream) is pointing to spreads around.
Using this metapher one explains also the homosexuality:
There are enough ressources, also of erotic charm collected (damed)
at this point near the reproduction events.
The pressure of a feedback alone without outer cause nor benefit
shows here it's power. Using the river metapher from above one may say
the dammed river overflows and some water break out of the cycle.
Let us ask also why the reproduction occurs in the middle of a cycle
and not at the end. Creating a sucessor at ones death appeared
technically more logical. Even for some species males
die immediately after female fertilisation. To answere such
questions it seems usefull to consider for a given specie
the whole birth and death cycle and ask in which part
it is stronger and in which is is more vulnerable.
The well know answere: the fertilisation must occure, when
the organism has te most power, receives an inspiring support from
the EbS-theory:
The feedback loop amplifies the strongest part the most,
because the part which follows is lost
(12)
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This surely the case only is we omit breeding.
We disregard it to get the first aproximation. |
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