questions. because isn't it true that you've served your life in bp? you've only recently become the ceo. but haven't you been in this business most of your professional life? >> i've been in this business 28 years. >> 28 years. so you should have some knowledge about these issues. and i sent you a letter in advance asking you, you were going to be asked these questionsed a to be prepared to answer it. how can you explain this decision where you ignore -- not you, yourself, but people who work for you, who should have known it was your directive to be a laser on safety -- how could they have ignored these warnings from people right within your company? >> it was clearly discussion between the engineering team as to what was the most appropriate course of action to take. an engineering judgment was taken. that involved long-term integrity. >> it was more than an engineering judgment.