scripps institute of oceanography, he joins us via skype from san diego, california. of course, it's worth pointing out that you were involved in the search for the titanic. i'd be interested to get your perspective on comparisons here between the search for the titanic and of course flight mh370. >> sure, thanks for the invitation. it's a pleasure to be here. well, i think for the titanic, we had a much better idea where it was. as you may recall from reading the stories, there were a number of ships that arrived on the scene. we didn't quite at gps that we have today, but the navigation was good to within, i would say, a couple miles. so imagine you have a 30 kilometer, by 30 kilometer uncertainty in finding the titanic and that's something on the order of a thousand kilometers. what we have here is more like 58,000 kilometers of uncertainty in finding this shipwreck. so the task is much more difficult. >> now, jules, you were saying