BP's report last week on findings of an investigation into the fatal Macondo well blowout is a landmark event that will require months if not years for the oil and gas producing industry fully to digest. It documented a complex sequence of lapses that will influence regulation, lawsuits, industry practice, politics, and personal lives for even longer.For all its complexity and ramification, the report proved remarkably suited to summarization. The chore fell to Tony Hayward, outgoing BP chief executive. "There was a bad cement job and a failure of the shoe track barrier at the bottom of the well, which let hydrocarbons from the reservoir into the production casing," Hayward said...