so you can see this investment by david m rubenstein has tremendous. it is one for it is a commitment and a contribution for which we are most and most appreciative through david's generosity. millions of people across, the country and around the world have been able to explore more complete story of history. and as notes, the good and the bad with the recognition that there is nothing wrong with america that can't be cured by what is right with america. ladies and gentlemen, it is my honor to introduce to you david m rubenstein. thank you. thank you all much. all right, so let me acknowledge the presence of our former chief archivist, david ferriero. david, thank you very much for returning. our earlier chair, jim blanchard. thank you very much. and all of you who here who care about these issues. let me try to make two points briefly. first, why do we have an archives anyway? why do we really need preserve all these documents at the moment? because of digitization and we can digitize everything. so why do we need this big building and other buildings