I wouldn't dismiss someone's viewpoint just because they're a comedian. As a matter of fact he made several valid points including his observation that all the blame is being directed at just one party despite the clear implication that others had a hand in the catastrophe. As for evidence to prove a negative - the points I've made in defence of BP are based upon the facts that 1. the rig was owned and operated by Transocean; 2. the BOP was manufactured by Cameron International and 3. Halliburton was responsible for cementing the well. If you let me know which if any of those suppositions you take issue with I'll try to point you to a relevant resource. Now if you don't mind I'd like you to produce your evidence that no other party apart from BP was in any way at fault and culpable for the tragedy. See the point?