Paleo Diet: Raw Paleo Diet and Lifestyle Forum
Raw Paleo Diet Forums => Off Topic => Topic started by: TylerDurden on November 13, 2012, 06:26:49 am
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Are we getting more stupid? Researchers claim our intelligence is diminishing as we no longer need it to survive
By Mark Prigg
Our intelligence and behaviour requires optimal functioning of a large number of genes, which requires enormous evolutionary pressures to maintain.
Now, in a provocative theory, a team from Stanford University claim we are losing our intellectual and emotional capabilities because the intricate web of genes which endows us with our brain power is particularly vulnerable to mutations - and these mutations are not being selected against our modern society because we no longer need intelligence to survive.
But we shouldn't lose any sleep over our diminishing brain power - as by the time it becomes a real problem technology will have found a solution making natural selection obsolete.
Researchers say we are becoming less intelligent because we no longer need intelligence to survive
'The development of our intellectual abilities and the optimisation of thousands of intelligence genes probably occurred in relatively non-verbal, dispersed groups of peoples before our ancestors emerged from Africa,' says Dr Gerald Crabtree, lead author of the paper published today in Cell Press journal Trends in Genetics.
In this environment, intelligence was critical for survival, and there was likely to be immense selective pressure acting on the genes required for intellectual development, leading to a peak in human intelligence.
But it was downhill from there on in as, from that point, it's likely that we began to slowly lose ground, the researchers claim.
With the development of agriculture, came urbanisation, which may have weakened the power of selection to weed out mutations leading to intellectual disabilities.
The team believe we have sustained mutations harmful to our intelligence.
Based on calculations of the frequency with which deleterious mutations appear in the human genome and the assumption that 2,000 to 5,000 genes are required for intellectual ability, Dr Crabtree estimates that within 3,000 years, about 120 generations, we have all sustained two or more mutations harmful to our intellectual or emotional stability.
Also, recent findings from neuroscience suggest that genes involved in brain function are uniquely susceptible to mutations.
Dr Crabtree argues that the combination of less selective pressure and the large number of easily affected genes is eroding our intellectual and emotional capabilities.
But the loss is quite slow, and judging by society's rapid pace of discovery and advancement, future technologies are bound to reveal solutions to the problem, Dr Crabtree believes.
He said: 'I think we will know each of the millions of human mutations that can compromise our intellectual function and how each of these mutations interact with each other and other processes as well as environmental influences.
'At that time, we may be able to magically correct any mutation that has occurred in all cells of any organism at any developmental stage.
'Thus, the brutish process of natural selection will be unnecessary.'
taken from:- "http://www.dailymail.co.uk/sciencetech/article-2231924/Are-getting-stupid-Researchers-claim-longer-need-intelligence-survive.html"
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>> 'Thus, the brutish process of natural selection will be unnecessary.'
The most brutish these days is just deciding to make babies.
I sincerely hope us raw paleo dieters reproduce.
Tyler, when are we going to see your progeny?
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No idea...
Huebner debunks the idea in the article that advancing science will counter the negative effect of the lack of natural selection:-
http://www.newscientist.com/article/dn7616-entering-a-dark-age-of-innovation.html (http://www.newscientist.com/article/dn7616-entering-a-dark-age-of-innovation.html)
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No idea...
Huebner debunks the idea in the article that advancing science will counter the negative effect of the lack of natural selection:-
http://www.newscientist.com/article/dn7616-entering-a-dark-age-of-innovation.html (http://www.newscientist.com/article/dn7616-entering-a-dark-age-of-innovation.html)
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If Moore's Law continues for another 30 years or so, then we we have total mastery of the human genome, as well as biochemistry, including stem cells. At that point, modifying our own intelligence will be trivially easy.
Modifying intelligence is simply a bio-engineering problem, which is really an engineering problem, which is really a math problem. Math problems can be solved easily by a fast-enough computer.
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CK - the history of science and medicine so far suggests this is NOT what will happen!
Its more likely that people will tinker with something they don't understand and create yet more unforeseen and undesirable consequences!
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CK - the history of science and medicine so far suggests this is NOT what will happen!
Its more likely that people will tinker with something they don't understand and create yet more unforeseen and undesirable consequences!
Science fails before it succeeds. But it eventually succeeds.