answers to some of those questions especially the ones about how much did you save by this particular maneuver and how much did you save by that one? won't that be in memos and budget documents somewhere that the congress will eventually discover? >> i think there's going to be a lot of that to come out, lawrence, but you recall these wells are very complex and it's going to be difficult to bifurcate some of the numbers to where it's clear what was --รง what option saved more than another. but i think the pattern of behavior is going to be fairly clear as the investigations go forward. >> senator grassley has released a letter saying bp as a matter of practice was not complying with minerals management services regulations governing blowout preventors because mms never asked them to. so who is at fault there? >> one of the issues here, lawrence, that needs to be addressed during this moratorium is the relationship between mms