What should I ask Jeffrey Sachs?

I may not follow any of your suggestions, but thought I should ask for advice, for my dialogue with Jeff next week.  I am the interviewer, he is the interviewee, more or less.  Keep in mind the goal here is to have an interesting and constructive dialogue, not to repeat the usual petty squabbles.

#CowenSachs, and you can sign up for the live stream here.

By the way, I thought you had many good suggestions for questions for Peter Thiel.