ONE OF THE THEMES OF MY TALK at Yale Law School’s blog conference was that Cass Sunstein’s theory of polarization and self-filtering, as spelled out in his book, Republic.com, didn’t really apply to the blogosphere.

Now Jim Miller takes the argument further, and I have to say that it has gained force in the intervening two years. And — as the Von Drehle piece on the red states that has engendered so much discussion in the blogosphere demonstrates — you don’t need technology to breed estrangement. Indeed, what Sunstein sees as “polarization” may really just be the end of a monopoly.

I do, however, disagree with Miller that any single blog — and certainly not this one — is a sufficient source of diversity. That’s why I encourage people to branch out in their blog-reading.

UPDATE: This piece by Gordon Crovitz on how the Internet is revolutionizing things is a must-read.

ANOTHER UPDATE: More here.