DaveRAFinn
Posts: 15
Joined: April 2005
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Evolution Thoughts
If you are about to die you have a freedom to take risks that you would not normally do.
A simple and obvious idea.
But if you are a species facing extinction and the risk is elective mutation then the combination is enough to destroy Darwins theory on the Origin of Species.
If a species facing extinction happens, because of its genetic heritage, to risk elective mutation it increases the chances of a change that will allow a successor. There are no costs, the species will be extinct anyway. The succesor will retain the risk taking genes. After enough extinction events most of the surviving species will have adopted risk taking at extinction. Once you know what to look for the evidence is easy to find. A bacterium that will live happily unchanged for thousands of years will increase its mutation rate a millionfold when threatened with extinction by an antibiotic.
The following article was submitted to the infidels web site, but apparently proved too much for their religious views.
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The short disproof of the Darwinian theory of the origin of species.
The Darwinian theory of evolution is based on the idea of slow steady changes arising from accumulated mutations. It is slow because, according to the theory, mutation is disadvantageous. The only mutations occur as a result of unavoidable errors in transcribing genetic information.
The normal expression of the disadvantage of mutation is in terms of there being far more disadvantageous mutations than favourable ones. This is true but irrelevant. Note that company balance sheets do not show the number of items of expenditure and income, only the value. Small numbers of high value transactions have the same effect as large numbers of low value transactions. The correct value for mutation is obtained by considering all possible mutations and assigning them a probability and a cost (or benefit). The net cost (benefit) of mutation is the sum of the costs (benefits) multiplied by the probability that they will individually occur.
Costs are not fixed. Supply and demand applies. A mutation that conserves water is of little value in a lake, of great value in a desert and the value will change with the environment. Of more importance, a beneficial mutation increases the long term probability of an organism having descendants and is limited by the impossibility that the probability can exceed one; similarly a deleterious mutation decreases the long term probability of an organism having descendants and is limited by the impossibility of the probability being less than zero.
Over a time scale, usually taken as a generation, the numbers of a population vary. The ratio of the numbers in one generation to the numbers in the preceding generation is a reproduction ratio. If the environment of an organism changes sufficiently for the long term reproduction ration to fall below one then the population of the organism will become extinct and disappear. At any point where the reproduction ratio drops sufficiently to virtually ensure extinction the long term probability of the organism having descendants is essentially zero. Consequently, the cost of deleterious mutations, as a fraction of this must also be zero. The only mutations which contribute anything to the cost(benefit) calculation for mutation are the small proportion of beneficial mutations which return the reproduction ratio back above one. All other mutations have no net effect on the slide into extinction, they can only affect the speed at which this state is achieved.
Once the long term reproduction ratio of a population drops below one the organism is in a position where mutation has a net positive effect. It has literally nothing to lose and a slight possibility of survival to look forward to. When mutation is a net good then more mutation is better and increases the possibility of a favourable outcome. It follows that under these conditions any organism having any genetic disposition to respond to the significant drop in reproduction rate by increasing its rate of mutation will have a greater long term probability of having descendents. The tendency to mutate at incipient extinction is genetically favoured. The greater the extent to which mutation is increased and the greater the accuracy with which the condition is detected the greater the advantage for the organism.
The process of mutating at extinction has positive feedback, compound interest in economic terms. Once initiated it will increase as the more extreme exponents of the process gain ever increasing advantage from electing to mutate. The limits are a totally accurate recognition of the state where mutation is advantageous and whatever turns out to be the upper limit of the mutation rate that will still allow any form of survival of the organism. Until these limits are reached the mutations, and the new species resulting from these mutations will increase with time. Eventually the numbers can be expected to reach and exceed the numbers of new species produced by Darwinism.
The condition that the two mechanisms, Darwinism and mutation at extinction, have exchanged as the primary producer of new species is easily detected. Following the crossover the number of species will show an abrupt rate of increase in numbers as the increasing rate of the extinction mechanism becomes apparent. Species will increasingly be created in the brief windows of extinction giving a fossil record with far fewer intermediate forms than under Darwinism with massive increases in the variety of life forms following periods of mass extinction. Species like bacteria will respond almost instantaneously to life threatening pollution and chemical hazards. There will be a marked difference in the rate of evolution in hazardous environments, such as land compared with the more benign ocean environments. The need to accurately gauge the population increase and decrease will lead to complex behaviours sensitive to population numbers. Etc.
Recognise it? Darwinism has not been the major evolutionary mechanism producing new species for quite some time.
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So there you have it. Yes Darwinism exists, yes it works to keep species well adapted, yes it occasionally produces a new species, and yes, if you look at a species it will normally be the only form of exolution on display. But in the brief
periods of extinction wild risk taking changes occur producing most of the new species.
This description only shows the what of the evolutionary process, not the how. I do have an outline of how I think it works but
a) I am not a trained biologist so my account will undoubtedly contain errors that would be siezed on as reasons for ignoring what I am saying.
b) There are some potentially very valuable medical uses of evolution and I would like to try for some retirement income. (offers from pharmaceutical or similar companies welcomed - state the percentage of the profits you are willing to let me have).
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