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Evolution and Instinct vs Intelligence explained
User ID: 64674015
01/13/2015 09:45 AM
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I came across this link the other day when I was researching the saggital crest...I seem to notice people (either on TV or in my presence) with a rather large saggital crest and was curious where this came from...now I know ;)
I really liked this link, it has numerous references at the bottom, which I'm still reading. It explained to me the need of a small, isolated population in order to 'speed' up evolution...and to weed out the weaker/mutated cells that are not needed in the population...
It also reminds me of my thread regarding electromagnetic radiation, and what would happen if you stuck a rh neg persons head inside a particle accelerator/stream of high energy electrons? Or what would happen if you had an egg and sperm in this stream? I know what happens when nature does it...but did the 'elite' try to speed up the process for certain people? I think so ;)
LINK: [link to www.onelife.com]
*The Evolution of the Human*
Evolution appears to work in bursts of activity. A species may survive for a very long time, even millions of years, with relatively little change, then suddenly, seemingly overnight, a variant species springs from it. Several such cases are evident among the hominid. When populations are large, species drift is very slow, regardless of species. Evolution works best when a small population of a species becomes isolated and faced suddenly with new hazards. The environment provides early and quick death to quickly weed out deleterious mutations and the small population provides a small gene pool across which helpful mutations may quickly spread.
*How Evolution Works*
Mutations are accidents in reproduction. The only place where such mutations can occur is in the production of the haploid cells (cells with a single set of chromosomes) in the sperm and egg, or in the joining of the two in conception. A reproduction accident anywhere else in the body will affect only the cell that suffers the accident. Such accidents will not be added into the gene pool and thus are not mutations. In such an accident, the sick cell is quickly replaced by a well one and the incident is over. Yet when such an accident occurs in the sperm or egg, it will appear in every cell in the offspring. This mutation then has a 50% chance of occurring in each grandchild. If the recipient of the mutation has several children, the odds are that the mutation will join the species gene pool by way of one or more of his children.
Natural selection then determines the fate of the mutation in the species gene pool. The test is not survivability or excellence. The test is in species population growth. If the mutation aids the growth of the species population then it is successful and will remain in the gene pool. If it does not, natural selection will remove it from the gene pool (through death and hardship).
Here are a few examples concerning man and evolution to help gain understanding of the way evolution works. The effects shown are not necessarily caused by genetics, but evolution treats all conditions as if they were. Note that natural selection acts as if all genes are involved in the success or failure of the individual. Each case that reduces the expected offspring is considered a vote against each gene in the genome. Each case that equals or exceeds the expected offspring is considered a vote for each gene in the genome. The mixing of genes in recombination allow individual allele selection over the long period of time.
*Instinct and Intelligence*
What is instinct? It is the driving force in the behavior of an organism and is directly determined by genetic code. Early single-cell organisms, billions of years ago, developed sensors to detect light and an instinct to swim toward that light. Others developed poison darts and sensors to tell when another organism was near. When their sensors said that something was near, their instinct fired the darts to obtain a meal. With the development of sexual reproduction, the instinct of sexual desire provided the drive for reproduction.
The long term result of evolution is bare survival. If the organism is in distress, the higher death rate removes survival impediments rapidly. An organism suffering a high mortality rate tends to become stronger to match its environment. If the organism is better than required, evolution will degrade it, again matching the organism with the environment. A comfortable organism has a lower death rate and so does not weed out detrimental characteristics as quickly. The result is a gradual degradation of function until the comfort is removed.
Another factor in evolution may have been brought into play. It is rare but when it occurs it multiplies the effect of evolution. It works in both a negative and a positive way, and aids the organism in its balance with its environment, in either case. If mutations in a critical area in the DNA causes organism distress, natural selection will eliminate the mutation each time it happens (through death and misery). A mutation may occur which protects the organism from mutations in that critical area. This new mutation will prosper in the gene pool. This is a case where one mutation eliminates or reduces the recurrence of another unfavorable mutation before it happens. Its result is very favorable to the organism.
The reverse of that action is also beneficial. If a mutation in a particular area is favorable (say, one that causes an increase in brain size), natural selection will allow that mutation to remain in the gene pool each time it occurs, if it is needed and utilized. The brain will grow incrementally each time the mutation happens. Since mutations are rare and random, brain growth would be quite slow even if greatly needed. Nevertheless, if a mutation occurred which encouraged such mutations so that they would happen more often, the rate of brain growth would be accelerated.
Evolution, through the liberal application of death and hardship, had built a strong body and a sound mind by the time of the appearance of Homo sapiens sapiens. Both were designed for entirely different environments than experienced by man today. We live longer today for three reasons. One is our health care and diet. The second is that our bodies were constructed to last thirty years under brutally harsh conditions. Removal of those harsh conditions allows a longer life span. Third is our culture. We cheat evolution of the deaths that it needs to cleanse the gene pool. In the short run we will live longer. Eventually mutations will erase these benefits. Evolution seeks to have us hanging over the edge.
In modern society, survivability is no longer dependent on the condition of the mind. In fact, the more successful tend to have fewer children. Mutations that distort the function or size of the brain are no longer removed by natural selection from the gene pool. The enormous size of the population slows the spread of adverse mutations across the gene pool, but if no one dies of their adverse effects before he has his offspring, alleles from adverse mutations will accumulate.
*The Evolution of the Brain*
Any mutation must be applied to a DNA coding that already exists. It can not be applied to coding that does not exist. Is this a silly statement? Not at all. It leads to the way that evolution changes an organism. Mutations are always applied to the existing DNA coding. Evolution makes something new out of something that already exists. If a bear becomes distressed in a given environment, it does not sprout wings and fly. Instead, such things as longer legs or claws will be tested. Also, evolution often does not fix the thing that causes a problem, it patches the problem by doing something unrelated. If an organism suffers a mutation that shortens its life so that it has difficulty rearing its children to childbearing age, that mutation will start being culled from the gene pool. Before that mutation has been completely removed from the gene pool, another mutation may occur which shortens the gestation period or child development period. If this shortens the child caring requirements enough so that the shortened life is no longer a problem, then both mutations would be acceptable as permanent residents in the gene pool.
One must remember that every cell in the human body can perform any function. Two copies of the entire genome are in every cell. A cell that is in the liver chooses to do that function. The cells in bone or in the brain choose to do those functions. When a mutation happens, it is either to the inner function of a cell, or to the size and shape of the overall cell structure (such as a skull, heart, etc.).
The thing we must remember is that africanus had a 450cc brain. We now have a 1350cc brain. That africanus brain is still in there. Evolution patches over. It does not do housecleaning. Another thing to remember is that evolution has a zero IQ. It was not being intelligent when it formed the rest of our brain. It was much more interested in the sex life of our DNA.
Even that is not the whole story. Africanus was largely instinctive. Most of the add-ons to his brain have been intellectual. Those original instincts were strong and uniform. Evolution saw to that. His world was brutally uniform and required full time participation. Any deviant individual behavior would affect the birthrate. Evolution would not tolerate it. His instincts were well maintained.
Intelligence is always at odds with instinct. If the instinct provided proper survival action, there would be no need for intelligence. Indeed this is the case with all of the other animals. There are literally thousands of species that survive quite well with little intellectual ability. Intelligence is supposed to override instinct to provide action that is more suitable. That is why we got it in the first place. By controlling our instincts we could provide action that enhanced our survivability. A little self-discipline provided great survival dividends, and it worked. Man has conquered the world. He is the fat cat. He is on top of the heap. Yet now, peak intellectual performance and self-discipline are no longer requirements for survival. Man has become self-indulgent and has reverted to satisfying his instincts.
That is why today we act like africanus though we have a 1350cc brain. Africanus would object loudly to that statement, because that statement is not quite true. We would not live an hour in his environment. We have reverted to his instincts, that is true, but those instincts are now perverted. Through discipline, man substituted intelligence for instinct over a long period. During that time the instincts suffered mutations. Since both the original instincts and their mutations were being overridden by intelligence, the instinct mutations were not considered detrimental by evolution and so accumulated in the gene pool.
We have now reverted to a set of perverted instincts and now cater to those perversions by calling them normal. We excuse behavior now that would horrify africanus.
CONCLUSION 1. The mechanism for reasoning is instinctive (mechanical, fix-wired, genetically determined in function).
CONCLUSION 2: The mark of evolutionary success in a given set of hominid genes, is to become a grandparent.
CONCLUSION 3: Man is not an intelligent being. He is, instead, an instinctive being with intelligence.
CONCLUSION 4: Since the beginning of man, the female and the male have had differing roles.
CONCLUSION 5: The human female dictates the sexual activity.
CONCLUSION 6: Man is and always has been a tribal animal.
Make sure you read the whole link, it's easy to understand and the author brings up several great points.
Last Edited by Tampa Heather on 01/13/2015 10:16 AM
What doesn't kill me only makes me stronger...
User ID: 65363444
01/29/2015 01:53 PM
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