frankly, riegler people know that. it doesn't take experts to tell them that. and meant that we followed the same group of students over the next six years to see how their lives changed and the extent to which their need for resources in the way they use those resources and how the program affected that and how it shifted. we got to see dynamics unfold that i think are commonly missed. >> host: i think you got to see nuances. that is something that gets messed when you're doing snapshots. you loose all of the in between's. most people when they talk about the cost of college think of tuition and fees. that's what they think of. your buckle elaborates on what the true cost of colleges. can you tell me about what it is and the audience about what it really takes to go to college and what it cost? >> guest: it's far more than tuition and freeze. the federal government knows that. and what it listens the cost of attending an institution it includes things like getting a roof over your head and food to eat and transportation. but the conversation keeps coming back