only 2% to 10% of those wells might use this particular string. the fellow from exxonmobil and other ceos said they wouldn't proceed this way. it appears to me that bp knowingly risked well failure to save a few million dollars. and you were drilling 18,000 feet below the sea. if you made mistakes, the consequences of those would be catastrophic. and in fact, have turned out to be catastrophic. don't you feel any sense of responsibility for these decisions? >> i feel a great sense of responsibility for the accident. we need to allow. >> how about the decisions that made the accident more likely? >> we need to determine what were the crucial decisions and -- >> did you get my letter and did you review it? >> i've read your letter, chairman. >> and did you realize in the letter we asked you to be prepared to discuss these