What is the biggest part of this discovery? >> i think the biggest part of this discovery is the long journey we have been on to control all the elements of these experiments, that are required to get to this point. you know, we take a laser that is as big as three football fields. we focus all the energy that it creates onto a target that is about that fake. this creates the conditions that are necessary to drive these reactions. and, you have to have incredibly precise delivery of that energy. you have to have targets that are perfect. you have to have them perfect in every element so that t...