What should I ask Benjamin M. Friedman?

As noted, Ben has a new and very interesting book coming out Religion and the Rise of Capitalism.  He is also the author of the superb The Moral Consequences of Economic Growth, and the earlier Day of Reckoning, about the economic policies of the Reagan administration.  Ben has been a leading macroeconomist since the 1970s, and he taught me Ph.D. macro at Harvard in 1984, one of my favorite professors I might add.  Here is Ben on scholar.google.com.

So what should I ask him?