The 'cash for clunkers' program was a big success in part because it gave people the sense that the economy was moving.

My friend jewelry designer Courtney Crangi has been obsessed with Star Wars all her life and has seen the movies 150 times. When we first started talking about it, I was amazed that her knowledge made mine - which was even then pretty impressive - seem pathetic. And I think there are a couple of reasons for this. One is that the leader of the rebellion is Princess Leia. American theatergoers had never seen a princess like that. She's not a delicate flower, she's not passive, she's often the only one who has a clue.

Rumors are nearly as old as human history, but with the rise of the Internet, they have become ubiquitous. In fact we are now awash in them. False rumors are especially troublesome; they impose real damage on individuals and institutions, and they often resist correction. They can threaten careers, policies, public officials, and sometimes even democracy itself.

We ought to ban hunting, I suggest, if there isn't a purpose other than sport and fun. That should be against the law.

So, you could often say things are terrible and that accounts for what happened, or things are really bright, and that accounts for what happened. Often, the real explanation for what happened is much more subtle and interesting and involves maybe small shocks or what a couple people did on a Wednesday morning that changed the arc of history.

Those who believe in climate change, as I do, I think it's also fair to say that they are more receptive to confirming evidence than disconfirming evidence. They happen to be right, but their motivations are in play also.

I have argued in favor of a reformulation of First Amendment law. The overriding goal of the reformulation is to reinvigorate processes of democratic deliberation, by ensuring greater attention to public issues and greater diversity of views.