What to store in our heads?

I’ll start with what sounds like a silly question: Which brain do you do most of your thinking with, the spongy one in your head or the electronic wonder at your fingertips? Which one stores more of your memories, and stitches together the webs of your friendships?

Even a decade ago, the answer would have been obvious. We depended on the prodigious thinking machine we carry between our ears, the most sophisticated work of circuitry known in the universe. But in recent years we’ve been turning to the giant and fast-expanding external brain we all share. The networked world, its vast air-conditioned data centers linked by neurons of fiber-optic cables, answers our questions, corrects our spelling and details not only our location, but the annual rainfall and average annual income there, and the name, weight and mating habits of the species most likely to climb the back fence and ravage the tomato plants. Unlike our own faulty equipment, this brain forgets nothing.    

While our brains have stayed more or less the same for 40,000 years, treading evolutionary water from the Cro-Magnon cave painters to Quentin Tarantino...

I’ll start with what sounds like a silly question:
Which brain do you do most of your thinking with, the spongy one in
your head or the electronic wonder at your fingertips? Which one stores
more of your memories, and stitches together the webs of your
friendships?

Even a decade ago, the answer would have been obvious. We depended on the prodigious thinking machine
we carry between our ears, the most sophisticated work of circuitry
known in the universe. But in recent years we’ve been turning to the
giant and fast-expanding external brain we all share. The networked
world, its vast air-conditioned data centers linked by neurons of
fiber-optic cables, answers our questions, corrects our spelling and
details not only our location, but the annual rainfall and average
annual income there, and the name, weight and mating habits of the
species most likely to climb the back fence and ravage the tomato
plants. Unlike our own faulty equipment, this brain forgets nothing.
   

While our brains have stayed more or less the same for 40,000 years, treading evolutionary water from the Cro-Magnon cave painters to Quentin Tarantino, our external brain is leaping ahead. In the last year or two of the 20th century
it learned how to search. It was as if it had sprouted a lobe for
memory. Then with the growth of social networks it took up the study of
friendships. As I write, computer scientists are teaching it how to
read, and how to identify human faces in crowds. Every year, this global brain
doubles in transistors. It’s growing stronger. And as it does, it piles
up not just mountains of data, but entire ranges of them. This brain,
nourished by everything we feed the networks, every chat, every click,
every edit in Wikipedia,
is getting smarter. As it does, we use it more and more, summoning it
with new devices, keeping this fabulous resource on call every waking
hour. And why not? At this point, forgoing our common brain would be
like volunteering for a lobotomy. You’d have to be an idiot.

In a Darwinian sense, the survival of each player
in the network hinges on its ability to tap our attention. Just like
geraniums, which grow bright red to attract bumblebees, each element
develops its own appeal. Some offer answers, others gossip or sexy
photos. Some of the most effective, including e-mail and social
networks, enlist us to engage our friends. The services they provide
can be useful, fun or even necessary. But if you look at it from the
point of view of the beleaguered brain, the networked world places an
enormous and distracting bazaar right before our eyes. It leads us down
dozens of paths. If successful, it can turn a simple e-mail check or
Web search into a multi-hour voyage into chaos. In the worst of cases,
we get confused and distracted–by some measures, perhaps, dumber–and
it keeps growing smarter. I look at it as a giant and thriving parasite.
    What
happens to our own brains during this process? Far more than a work
shop or a reference book, our brain, after all, is the headquarters for
love, faith, joy, friendship, everything we experience in life. How can
we assert our mastery over the electronic brain, this globe-spanning
marvel, without surrendering to it?

In a sense, this is
much the same challenge we face when we eat. Through most of our time
on earth, humans, like other animals, have had to scrounge for
nutrition. Cave men didn’t count calories. But with today’s abundance
in wealthy societies, our omnivorous instincts lead to obesity.
Information, too, has long been scarce. But this is true no more. We
can overload. We can binge on junk. This feeds the electronic brain and
risks starving our own. We must manage more than ever what we put into
our heads.
    A couple of months ago, I drafted a proposal
to write a book about this issue. The trouble, I soon realized, was
that while I could describe the challenge, I was short on answers. What
should we keep in our heads? Since I had only vague ideas, I’ve written
this to kick start a conversation. Maybe together we can figure it out.
I’m herea and at TheNumerati.net.