Sendhil Mullainathan

The problem with data is that it says a lot, but it also says nothing. 'Big data' is terrific, but it's usually thin. To understand why something is happening, we have to engage in both forensics and guess work.

If someone who is poor says, 'I may not have much money, but for me, what's really important is to have a good television so my family can enjoy and watch,' we should be a little careful and recognize that just like we all have individual liberty to make the choices we want, that we not judge too much on that.

Especially now, with 'Glee,' it's allowed a lot of kids to love music and performing at a young age. All ages watched 'American Idol,' but I think it was nice to be able to show kids, 'Hey, you can be here, too.'