see what is out there we just sample what is happening in another branch of the universe. now there is another way to wrap that it looks like you balding infinity but you don t have the problem. guest: ruutu day fact talking about the radius of a circle which of course, is finite size it is not infinite. see you don t have the problem that we were suffering with earlier on. absolutely. our time is up. thank you for the wonderful, lively and mind expanding conversation. [applause] [applause] and. thank you very much. we get lots of good questions that we will save time for. this is an interesting occasion because this is the first time i have been up in front of a naughty is talking about andrew johnson. forgive me if i say jefferson. [laughter] i had to write that i had to do a spell check. because the temptation was great. if somebody told me at any point i would have written a book about andrew johnson i would tell them they were crazy. he is an interesting person bu