unless we access history in a purposeful way, its lessons will, as the great historians, carl becker warned, lay in nert in unread books. i'm really looking forward to where you would like to take the conversation, what a privilege it is to be with you, thanks. >> thank you for those terrific remarks. you brought a few more points to my mind, talking about taking the time to free your mind. just get in with a senior person, sort of role model for our project is eric aidleman, one of our board members, i first met him in 2007, he was working on iraq and they had an idea they were thinking of and it bore some relationship to what was going on in vietnam. they brought me into the pentagon for an hour to talk to him and other senior officials. it had some value to them and i couldn't give them all the answers, having that historical perspective was valuable. very easy to get caught up in the crisis of the day, valuable that way. you talk about complexity, i think that's one of the advantages of history and histori historians, the social sciences in many respects, not all of them, but man