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Originally Posted by zteccc
We get taller, in some nations, societies and peoples, but in others we don't. Could there be another factor? For example, could we be better nourished today than we once were? Could the size difference be just a standard variation provided by our genome? Such physical traits could easily be explained without evolution, and in fact, we find that the human genes aren't appreciably different worldwide, so despite the variance in physical size, it appears that the genes are the same. In short, we haven't evolved to be taller, we're simply expressing a variation in the given genome.
According to Occam's razor, the hypothesis with the least assumptions needed is the one that science should choose. Clearly, an evolutionary change to explain height (one that we can't see when examining the genes in various cultures) is a greater assumption than simply better nourishment and existing gene variation.
Nonetheless, if your faith is based in Evolution, good luck with that.
-- Jeff
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but what do people think evolution is? of course it has to do with the way peoples eating habits and the climats have changed, but that is part of Darwin's theory too,the more the they discovered the more the brain changed , and the more intelligent , the more they discovered new ways of hunting,eating...and so on.That is evolution.
The genes follow all this, a simple example if cut off the tail of a cat, and do so for 2 or 3 generations, now you have a fairly good change to see the kitten of the 4th generation be born with a shorter or hardly existing tail and 2 or 3 generations after , the kitten to come probably won't even have one.
Now take the example of 2 polish parents with fair skin having kids, let them emigrate to a hot climatical country,after a few generations you will see darker skinned kids be born because generation after generation the genes will of modified themselves to get use to the environment...
yes I totaly agree with Darwin and what I read about "evolution' confirms me into it.
After everyone is open to believe his own theory..