and michael duffy of "time magazine" is author of a book about the world's most exclusive fraternity. the name of that book is "the presidents club." michael duffy as these presidents go from being campaigners to being presidents, how are they transformed? >> you know we asked a couple of the presidents who are still alive what they remember the big surprise or the big shock being when they finally stepped from being candidate into the oval office. and they say three things. one is the speed of the decisions come much faster. and unpredictably. they can't control the agenda. the second is, they're all hard. there are no easy ones and they all are fairly outspoken about just how difficult the choices are. basically there are downsides everywhere. and the third thing is that's a little more interesting. just because you make the decision doesn't mean anything happens. when ike took over from truman, truman said "poor ike, he'll think it's just like the army. do this and do that. only this time nothing's going to happen when he says it." and that's something you even see now, 60 or 70 ye