and i want to start by welcoming you insane inks for being here on behalf of our new owners, bradley graham and lisa muscatine. in this staff here but they collected things were supporting the event series tonight in here for lisa randall and her second book, trained for. we are excited to have her here to talk about this book. if you're new here, welcome and i would quickly go over the format of what's going to happen. lisa is going to present her boat virtual talk about her book using visual as well. but we are going to do is leave the light of because we are recording. if you want to connect it to the corners, you have a pretty good view of it. will i be little time for q&a from u.s. courts. we look forward to your input because we recorded as i said, we are going to take questions from the audience think vote in the middle aisle. if you can get to that, that would be a of a multi-questions remain. afterwards while the book signing. lisa will find both her books, trained for available in the front of the door. it's always a good idea to silence cell phones, too. and that's how wilco. so