you the beautiful images that you see today, we had to very precisely measure the curvature of those mirrors. so we came up with algorithms and technology to be able to do that, and we transferred that to the ophthalmology community, so that they can scan the surface of your eye very, very precisely and very quickly, so that they can determine astigmatisms, far—sightedness, near—sightedness. 0n the international space station, we have a system that has to capture the waste water there, the water from your respiration, from your sweat and from your urine, and be able to take that and transfer it into drinking water. and apparently good—tasting drinking water. they can actually take very contaminated water out in the field, that is filled with bacteria, and be able to process that water to get 99% of the bacteria and everything out of that so that you can have pure drinking water in remote locations. when you have really impossible dreams and impossible goals, if you reach for those goals