[applause] >> i'm kathy, georgetown law khiara, that was amazing. very right on point. i think one thing we can take from your is that maybe we're at a point where we should be really hammering on extralegal ways to deal with this huge problem. i questions and comments are for sonu. thank you for your presentation. i really like compared to four. it's interesting to look a what different countries are doing and the impact on those. i think you presented your work in a very descriptive way. there wasn't much normative but i'm guessing that normatively that you would come you like the south african system better than u.s. i think what you have is a really interesting that the materials to do a really balanced analysis. so some things you might want to think about the values of federalism, not putting so much power at the federal level, having states have a lot of power. also predictability. when you privilege one value over another, people are on notice about what they can do and what they can't do. when you place these really important values equally, it's not commute no