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Saturday, August 16, 2003

The theorists and the blackout 

I was wondering aloud a couple of days back what the network theorists would have to say about the blackout of 2003, especially since some of them have talked about the interconnectedness of the power grid in the past. Sure enough, the New York Times is carrying an op-ed by Albert-Laszlo Barabasi, author of the rivetting Linked: The New Science of Networks.

Cascading failures are occasionally our ally, however. The American effort to dry up the money supply of terrorist organizations is aimed at crippling terrorist networks. And doctors and researchers hope to induce cascading failures to kill cancer cells. The effect of power blackouts, economic crises and terrorism can easily be limited or even eliminated if we are willing to cut the links. Strictly local energy production would guarantee that each blackout would also be strictly local.

But severing the ties would also cripple the network. Shutting down international trade would surely eliminate the impact of the Japanese central bank on the American economy, but it would also guarantee a global economic meltdown. Closing our borders would reduce the chance of terrorist attacks, but it would also risk the American dream of diversity and openness.