>> possibly not using satellite iman ri.e university of western australia is quite adamant that they've got a very sophisticated, complex modelling occurrence in the indian ocean. and they're currently backtracking on the currents over the last 500 something days. we discussed this on your show. >> okay, let's dig in a little bit deeper. someone on twitter says area changed on the search area around the island. will it be the new search area? and you say it doesn't change anything? >> you're looking for the plan. the search area where it's the m.r. sat data. they have to plug a lot more than just this in it. it may help a little bit, but, 500 days, in modelling like that, with all the factors, you have to have every weather factor in the last 5 hundays. what you will get, if you're right around the seventh arc, you'll validated, in a way. >> you've got to be careful. you're not automatically evaluating your own data. you already know what it is. so finding more debris. finding different patches of debris. >> there were quest