have we reached a point in our history, akhil amar, where you believe we need to gather ideas for taking a look at the mistakes and some of the wrongdoing that the constitution -- what happened? oh, i'm so sorry. is he all right? are you all right? okay. coming to the microphone. all right. please, be careful of those stairs. [ applause ] have we reached that point, akhil? >> two or three -- i like to get people expressing opinions. this is especially true in a law school. so my version of david's assignment, these teams might be who's the most overrated president? who's the most underrated? something where they have to take a position. what were the biggest mistakes in the past? what do you think the five biggest challenges of the future are going to be? something -- and, again, we could have teams, and you could even sort of compete to win a prize for your team, for the most interesting answer to that. but i do think just finally on the challenges of our world they are global challenges created by the internet and climate change and international terrorism. so some of the answers that