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So ineos team uk have a big mathematical problem to solve which is simulating all the air conditions and the hydrodynamic conditions on the yacht as it sails through the water under an insane number of different scenarios. to simulate what happens when water strikes the hull of a yacht, or when air hits the sail of a yacht, we pixelate those surfaces. we put little square pixels all over that yacht. at each one of those pixels we do a little bit of math, we understand what the temperature pressure and forces are that are acting there, then we can work out what's going to happen next and then h...

An idea of what a real, living boat will look like when it is in the water in race conditions. and the more detailed your simulation is, the more pixels you can break your boat into, the more accurate your model becomes. but every single pixel is simulated by a different computer processor, which means you need a massive amount of computing. basically, you need to harness the power not of the wind but of the cloud. now the crew do get to test how the virtual designs handle. this simulator knows exactly how the current design will behave when under the control of a master sailor. so let's see h...

In race conditions. and the more detailed your simulation is, the more pixels you can break your boat into, the more accurate your model becomes. but every single pixel is simulated by a different computer processor, which means you need a massive amount of computing. basically, you need to harness the power not of the wind but of the cloud. now the crew do get to test how the virtual designs handle. this simulator knows exactly how the current design will behave when under the control of a master sailor. so let's see how it goes with me. now i am sailing! wow, one of the foils has gone into t...

Which is simulating all the air conditions and the hydrodynamic conditions on the yacht as it sails through the water under an insane number of different scenarios. to simulate what happens when water strikes the hull of a yacht, or when air hits the sail of a yacht, we pixelate those surfaces. we put little square pixels all over that yacht. at each one of those pixels we do a little bit of math, we understand what the temperature pressure and forces are that are acting there, then we can work out what's going to happen next and then how that cascades all the way down the line to the next pix...

Better term. they were just sort of best friends with a romantic bint. >> there was another weird thing, her phone was full of texts between her and malik kearney that weren't on his phone. what a twisted story those texts would tell. coming up -- a tip from a complete stranger could blow the case wide open. >> we got rid of a gun. i think. >> i mean, do you get calls like this every day? this is pretty remarkable. >> i wish, but we don't. >> when "dateline" continues. load it up with a week's worth of groceries. take the kiddos out for ice cream. check that it has enough wiggle room in your...