well design and the chairman waxman talked about this for a moment. the best practice would have been to use a liner and tieback which provides four barriers to prevent the flow of dangerous hydrocarbons to the well made. instead bp chose a look string approach which has only two barriers. and internal document of the company warned that this approach was not recommended because, quote, cementing simulations indicate it's unlikely to be a successful cement job. and you can look at tab six of the notebook you have in front of you to see that. it says cement simulations indicate it is unlikely to be a successful cement job due to formulation breakdown. this is an internal bp confidential document from mid april. have you seen this document before? >> i say the as a consequence of