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Post by Pem on Feb 23, 2009 8:09:47 GMT -7
This is a repost from the blog.
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Post by millis on Mar 1, 2009 4:02:59 GMT -7
Was a good video too, made some very good points in an awesome animated fashion =3
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Post by Pem on Mar 2, 2009 8:28:45 GMT -7
I thought so as well, too bad the voice actor wasn't particularly engaging, this should be mandatory in anything meant for education.
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Post by electroshock on Mar 2, 2009 16:16:08 GMT -7
I liked it, but doesn't evolution occur by chance? Through random mutations over many generations, i mean. It's just chance that the environment favors such a mutation and allows its continued presence, and that the mutation occurred in the first place.
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Post by Pem on Mar 3, 2009 8:54:18 GMT -7
The mutations are indeed random but the selection process is not. Natural selection is the environment putting pressure on an individual, the individual has to survive these pressures using the traits given to it through it's genes (affected by mutation). If these traits allow it to be more successful than most others, we could expect this organism to do better than others and thus reproduce more increase the occurrence of that particular trait in the population. The opposite is true as well, if a mutation of a gene causes a trait which lowers the organisms fitness, (let's say it runs 0.00001 times slower than the average) we would expect to not to do as well, therefore it would likely decrease in the population.
Chance works on the mutation of the genes. Evolution works on the success of those genes and their frequencies in a population. So yah, mutation is random, evolution is not. The environment is chance to but that chance works on the change of mutation and weans out those less able to survive.
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Post by electroshock on Mar 3, 2009 16:03:55 GMT -7
so, the creation of said creatures is chance, but their survival is not?
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Post by dallen9 on Mar 17, 2009 9:04:25 GMT -7
Survival of the fittest! Darwin's Role in leading Hitler's Madness! XD And Darwin Didn't want Genocide... Or Did He? O.o
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Post by richdes on Dec 21, 2009 21:44:15 GMT -7
Evolution also work by making recessive features that are not of benefit. Make you wonder how many generations it takes for that to happen. For example, given that we are eating mostly processed foods, how many generations before we develop an intolerance to naturally occurring foods.
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Post by electroshock on Jan 7, 2010 16:13:34 GMT -7
a long time, actually. What benefit would it be to be unable to process naturally occurring food? For such an evolutionary feat to occur, we'd need to have supplanted our diet of natural food with processed food entirely and we'd need to be eating just processed foods for a very long time.
And what do you define as processed food? cooked food has been processed, hasn't it? We don't exactly have steak growing trees, now do we? And if you mean, chemically altered food, the health benefits of eating natural food grossly outweigh anything like a cheeseburger.
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Post by richdes on Jan 17, 2010 1:24:18 GMT -7
The point I was trying make is that evolution is only selective of traits that enhances the fitness of a species. Trait that do not enhance the fitness are "neutral" and can be lost over time.
For humans there has never been, until now, such a selection of processed foods to choose from as there is now. By processed foods, I mean foods that have been basically broken down into its components and reassembled to make products that do not occur naturally in nature. Whether it is healthy or not (in the long term) does not matter as long as the humans make it past their reproductive years. I would think that eventually human would would loose some capability to digest certain foods if they were over time digesting only a limited repertoire of processed foods.
Admittedly it may take a quite a few number a generations for humans to lose the capability to digest natural foods, but this precedence already exists in the form of lactose or gluten intolerance.
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Post by Pem on Feb 12, 2010 7:04:38 GMT -7
Good points richdes. However how does processed food differ from "natural" foods? When it comes to what the enzymes in our bodies break down they don't differ at all. Both are made of simple starches, both have the same proteins the only difference is the quality and quantity of fat molecules. Processed foods tend to have more saturated fats which are hard on our system to digest. What really matters is the basics in the foods for digestion.
Lactose intolerance is actually the wild type phenotype for humans, the ability to digest lactose past childhood is something unique among cultures that have had a cattle producing past. Examples are Europeans and middle Easterners. Lactose intolerance is common amoung groups not included in those two with the most popular example being Asians.
I'm not too sure on the history of gluten intolerance or psyliacs but I'm sure it is more common in groups which had low exposure to grains, perhaps with a more fruit and meat diet, or even Barely instead of wheat.
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Post by stardust on Nov 20, 2013 12:48:23 GMT -7
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Post by stardust on Nov 20, 2013 12:57:22 GMT -7
Lets take a step back before "evolution" what organisms lived on the earth before the 3rd dimension was intact.......the flat organisms.......now go another step back to before any life life existed on earth just stars exploding and creating the essential elements necessary for life..."THIS WAS BEFORE OUR" 1st, 2nd or 3rd dimensional perception existed yet the known universe IS NOT FLAT(above 3D) and WAS THERE before our 1st dimensional existance ....MY POINT IS...All Dimensions exist simultaneously and the "VIEWER" is who see's or is limited to 1 or a few of them. There is a designer, a intelligence which dictates how long a item will exist and what time it should advance(upgrade) or be destroyed........in the dinosaur age..the oxygen level of the earth was greater allowing for muscle tissue to be developed faster and grow to very huge animals......BUT some intelligence decided to END THAT CHAPTER and start a new creation(recalibrate the oxygen levels) And lord knows what other small details had to be prepared before the new life forms were added.......Evolutionist think we evolved from monkeys to humans in a VERY small time frame(compared to the 4.5 billion year old earth).....and then a mutation mysteriously happened creating the "still weird "RH negative human............What i am trying to say is WE did not evolved...were were genetically created in a very short window. The last "known" genetic upgrade was 6000 years ago when the first RH negative person emerged(Cant be cloned, born with a higher IQ, sensitive to electromagnetic fields, high abduction rate, low blood pressure and body temp, ability to stop watches, copper based blood, inability to mate with regular humans unless medical intervention is offered, born with tail, extra vertebrae)AND HAVE BEEN IN ALL POSITIONS OF POWER SINCE the days of SUMER UNTIL NOW......HOWEVER....I strongly believe it is all a spiritual game in order to prepare a soul.......to know enough to live in a place where nothing exist except your mind(consciousness) the theoretical 5th dimension which is so hard to see..some say it does not exist but OF COARSE it does, we just don't understand it, We do know that it involves no matter only consciousness.[/quote]...sorry if this post gets on your nerves but it all comes together, I can be very annoying
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