That are successful that work the way theyre intended . So its thinking a lot about failure and what could go wrong. We are seeing that with the plane that went down somewhere over malaysia. We dont know exactly where. There are so many things that couldve gone wrong with that plane and there is beginning be talk about why wasnt this anticipated or or why wasnt that anticipated. Thats good engineering of a plane is that you dont let it get lost. You have safeguards builtin and even if there are people involved that want to bring the plane down deliberately there should be features in the design of the plane that are bent that from happening. We are seeing some of that even though the plane went off course. There are ways of tracking it but not in the control of the pilot. Host that takes us to your most recent look subeleven understanding failure and when you say forgive design what you mean by that . Guest will one of the first things we often hear when there is an or a failure such a