Democracy and accountability

Megan McArdle has a very interesting piece addressing the legitimacy of the Fed's aggressive, central role in the policy response to the ongoing financial crisis:

But here's the problem: the Fed has performed vastly better on any
metric except "being elected" than the Congress. There's little doubt in
my mind that if we had not had an independent central bank, unemployment would
be many percentage points higher, GDP would have contracted much more strongly,
and we wouldn't now be making optimistic noises about the thing bottoming
out...

I think that the political process will hopelessly screw up the
management of this crisis (something which libertarians are perfectly able to
see when the government screwing things up is a left-wing populist one in Latin
America). But maybe The People, God bless them, deserve to screw up their
economy if they want. On principle, I am opposed to saving people from
themselves. And anyway, maybe I'm wrong and the wisdom of crowds will
prevail.

On the other hand, do they have a right to screw things up for everyone
else? Should a populist 60% be allowed to plunge their neighbors deeper
into crisis? In the case of America, to plunge the whole
world deeper into crisis?

The uncomfortable conclusion I'm coming to is that yes, they
should. Ben Bernanke should be hamstrung even though it's likely that this
would make everyone worse off. And people who advocate for ending the
independence of the central bank should be willing to accept all that this
entails: inflationary monetary policy (the people love inflation!), bad
and unpredictible banking policy, the collapse of the US economy. I just
wish I didn't have to go along for the ride.

Huh? I don't follow her logic at all. A modern democracy is a sophisticated political system. For some specialist functions like monetary policy, undemocratic actors do a much better job. In such cases, democratic lawmakers can voluntarily cede authority to an institution that's insulated from political pressure.

But here's the catch. No one's saying they couldn't take that power back if they wanted to. The Fed's only independent because elected lawmakers chose to make it so. They did this because they judged it to be in the long-term interests of the country.

So do we still have to hamstring Ben Bernanke? I'm just asking. He seems like a pretty nice guy.

Update: By sheer coincidence, Dave writes almost the exact same post at IPE Journal. Really, it's kind of spooky how similar they are.