Stuff, visit us before i introduce our guest at our moderators i want to give you a few quick housekeeping notes about using crowd deaths which you might not have used before. The event is recorded so you can watch it if you stay for part of tonights final talk because your water was boiling or you want to share with a friend it will be right here as well is on our facebook page. Second of all there is this lovely chat window open on the bottom of your screen, Say Something nice, please do. Type in, say hi, telling us where you are coming from all over the place it appears, and it almost goes without saying, please keep respectful and we will reserve the right to reserve anyone who doesnt it here to that standard which im sure will be unnecessary. And right next to that little chat box at the bottom of your screen you see the word ask a question, type it in there, chat any questions for david and we will have time at the end of the event to look at those. The event is Live Streaming on