yeah but it works with an efficiency of 2-40%. Show me just one other example of a fusion fueled power generating system with those types of efficiency's. You can't. You know why? cause there are none! Edward Teller couldn't think of one. His idea was to collect heat from explosions with circulating a type of salt inside a closed steel container. wikipedia's idea is to use abandoned mines filled with water to try to collect heat. No one has ever thought to convert blast energy into kinetic energy stored in the weight into electricity before.This system will still be used for thousands, even millions of years from now in combination with lasers. And at raw material cost I seriously doubt the energy required to do refining and cutting and the cost of the materials would add up to be more then the energy you create from using the described method.