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The following post from Wiring the Brain gives some insight into the genetics of intelligence from the other side. The genetics of intelligence is probably better considered from the viewpoint of the stupidity. Some really interesting insights into the correlation of body symmetry and intelligence too.
This is an example of why more scientists should blog and write in Human, so that the rest of us peons can learn from their research while stumbling through the internet.
The Genetics of Stupidity
English: Charles Darwin (1809-1882) in his later years. This image is flipped. Darwin’s mole was on the right side of his nose. (Photo credit: Wikipedia)
From an evolutionary standpoint, what might be the use of dreaming?
It seems like an energy drain to be firing off neurons in the brain for fun. It must have survived over two million years of natural selection for some reason. What might it be? Any thoughts?