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Nerds of the world, we may finally have a reason to celebrate --
and no, I am not talking about "Dungeon Siege" being made into a
movie. Scientists have evidence that human beings are still
evolving, according to an article in the Seattle Times.
According to Dr. Bruce Lahn, a scientist conducting genetic
research with the Howard Hughes Medical Institute, it is likely
that "the growth of brain size and complexity . . . is still going
on." There are at least 20 genes that go into the development of
the gray, squishy stuff between our ears. Two of these genes,
microcephalin and abnormal spindle-like, microcephaly-associated
(ASPM), are both involved in brain size -- more specifically, the
size of the cerebral cortex -- and are increasing in the world's
population.
Lahn and his group think this increase is due to an escalation
in evolutionary pressures. These pressures are no longer major
environmental changes, but are "from an increasingly complex and
technologically oriented society," said Lahn.
In other words, because we have little choice but to deal with
more advanced technology, like computers, coffee-makers and
Facebook, our brains have to continue to develop to keep up. It is
not like in the days of the dinosaurs when, rather than keeping up
with the latest version of Windows or Mac OS X (a la Leopard), we
had to stay ahead of the critters with big teeth and sharp
claws.
Some have criticized Lahn's findings as premature.
"The selection could be operating on any other not yet defined
feature," said Dr. Francis S. Collins to The New York Times. It may
be that ASPM and microcephalin provide some function other than
increasing brain size.
Dr. Sarah Tishkoff told The New York Times that scientists
aren't sure "what these alleles are doing." Tishkoff encourages
tests to be run in order to determine whether or not the genes are
being selected specifically for brain growth, or even if that is
the genes' primary function.
But do not let these party-poopers get you down -- this is an
exciting time for those of us who have been victims of that word
that starts with an "n" and ends with an "erd." Why? Because nerds
are better equipped to handle the rapid pace of technological
advancement and expanding global consciousness.
If Lahn is right and these brain genes are being selected for
brain growth, then I think the fashion industry should start
designing larger hats. Seriously though, if our brains are, in
fact, getting larger, it is no surprise; they have a lot more work
to do with the increase in technology. It is important to keep in
mind that this increase in brain genes has been occurring over the
last fifty or sixty thousand years, and not everyone has the
mutated genes that are in question.
According to Lahn's research, the ASPM mutation is found in only
30 percent of the world's population and the microcephalin mutation
is found in only 70 percent of the world's population. It is
interesting that there are scientists who argue that these genes,
which are only known to provide brain growth functions, might be
selected for some other reason. YouTube and reality shows are a
good source of evidence for Lahn's critics' arguments.
So, what do you think? Could it be that the brains of the world
will reign supremely victorious over the muscles of the world?
Probably not. Is it really about who is better than whom? Not
really. Even in this age of technology, brawn is needed. Maybe we
will come out of this age with a better balance: not too brawny and
not too brainy.
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