reiko what does that mean, contingent?>> guest: they are hired semester by semester or year-by-year, that they have no way of knowing whether they will have a job next year. and many have been in my view are earning less than minimum wage. so really, two thirds of the professoriate is earning less than $60,000 a year. many of them less than $30,000 a year on those part-time or nonlinear jointed appointments. so a lot of the professor professoriate is not exactly comfortable. amy faculty members who teach you have no health care, who have no investment in a retirement system. they live pretty rough lives and that is more the story of higher education these days than i paid faculty remember with corporate grants and corporate consultant ships. that is a really small percentage of the professoriate is doing that well. c-span: by his tuition gone up so much ahead of inflation? >> guest: well, first of october more than half of the undergraduates in the united states are at community colleges and pain about dirty dollars a cred