The
most successful biological organisms have an organization that eschews
centralized control in favor of allowing multiple agents to
independently sense and quickly respond to environmental change. Our
immune system trusts millions of cells all over the body to look for,
and neutralize, invading pathogens without any conference calls to our
brain to plan and execute an appropriate response. The octopus, which
has a powerful central brain, nonetheless knows how to balance its
advanced cognitive capabilities with the quick responsiveness afforded
by having millions of color changing skin cells spread across its body.Pretend
you are an octopus. You are happily (yes, octopuses seem to have
emotions) skipping over a coral reef looking for crabs to eat, when
suddenly you spy a large mouth grouper swimming your way. Your best bet
at this point is to hide, but how do you do it? You have a wonderful
brain, why not use it to tell your body what to do? Okay, start
shouting orders: “Arm 1, turn pink! Arm 2, turn greenish yellow! Arm 3,
turn sorta red-fuschia-ish!” You can see the problem right away. Not
only will your brain be too slow to tell a complex body how to act, but
the coral reef is too complex for your central brain to even have a good
sense of what it looks like in each little micro-environment at
once. Fortunately the octopus has millions of skin cells that can each
respond to the environment around them, changing shape and form to match
the very local conditions in their immediate area. Their collective
actions give the octopus as a whole its camouflage. Research by Geerat
Vermeij, who looks at broad patterns in the history of life, suggests
that the most adaptable organisms use decentralized organization—where
multiple semi-independent agents sense change and respond to it on
behalf of a larger body, but not under the control of a central brain.
The vertebrate immune system is an excellent example, wherein many
independent sensors scan the body for invading pathogens, identify and
upregulate an appropriate response without deference to a central
brain.In society, there are both negative and positive analogies to this
type of system. For example, putting most of the U.S. security agencies
into a single large centrally controlled bureaucracy (the Department of
Homeland Security) after 9/11 led to ineffective responses to the next
major security emergency, Hurricane Katrina. In the aftermath of
Katrina, the question on everyone’s mind was, “Where’s FEMA”, referring
to the Federal Emergency Management Agency. Finding an agency within a
bureaucracy means finding the “org” chart, and the org chart of DHS
looks like this:Can
you find FEMA in that (hint: it’s the box with the dotted line around
it)? The org chart is a symbolic representation of the difficulty for
ideas to find solutions or solutions to find ideas in a centralized
organization.By contrast, Google Flu Trends uses the distributed sensing
power of millions of Google users searching flu-related terms to
accurately detect flu outbreaks. Unlike the centralized US Center for
Disease Control’s flu trends reports, which require surveys to be sent
to doctors and hospitals and returned to CDC for analysis and report
writing, Google Flu Trends are available (like the camouflage of an
octopus) almost instantly, and up to two weeks earlier than the CDC
data.But we also like to say, “Have an Open Mind, But Not So Open That
Your Brain Falls Out”. By this we mean, all that decentralization is
great, but it will never work effectively without some central control.
In adaptable systems there are several key roles of a central
controller, an organization, or a manager. A central controller is
useful for getting the resources that decentralized problem solvers need
(all those skin cells in the octopus wouldn’t work at all without the
metabolic energy provided for them by the octopus and its clever
brain). A central controller is also often useful for having a bigger
vision (the octopus seeing the threat of the predatory fish) and that is
essential for helping define the actual challenge. For example, while
the most effective research, mitigation, and adaptation strategies for
climate change may be at the local and regional level, it is still
necessary to have a body like the Intergovernmental Panel on Climate
Change that can see the collective effect of our actions on the planet
as a whole and across long time scales.
Monday, January 7, 2013
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