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Originally Posted by Eduardo R.
Murdock, have you heard of differential survival? It is one of the key factors needed for natural selection. Because of technology and society humans no longer really have differential survival because whether you are fit or unfit, smart or dumb you tend to survive aslong as another and reproduce as much as another (unless you are an anomaly like 1000lbs). Natural selection cannot take advantage of a new gene mutation (say smaller muscles in one person) because that gene will most likely not make that person able to reproduce and survive better to the point that he will spread his seed more then a normal person. This is why a lot of scientists think the human being will no longer evolve naturally.
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Yes i have and I see your point fully. Again though im thinking in terms of millions of years... If we evolved from the diffrences in Homo erectus to Homo Sapien who's to know for sure we are the last product of our evolution? If not, thats just what i think we may evolve(or maybe not evolve but adapt) into. Then again with our transportation systems and what not, we no longer have genetic isolation and without genetic isolation, there is no further opportunity for speciation among humans.