Great Questions of DeLong

Arithmetic-challenged Brad DeLong asks about ten questions in a post entitled Six Questions About Productivity Growth. Among the questions,

The differences in productivity growth between the U.S. and mainland Europe--especially in infotech-heavy services. Why, and what does it mean?

I think that this is a big question. In the past, Brad has expressed the view that Europe is bound to catch up. On the other hand, there is the Den Beste/Zinsmeister view that Europe is on a downward spiral.

Discussion Question. All of Brad's questions are discussion questions.