True, as the law of thermodynamics dictates that energy is neither lost nor gained, that being said one must realize that there are other factors that remove energy from a semi-closed system (exa heat or friction). With that being said I would have to agree with Codiac on that one, there is no such thing as 'free' energy. But with the introduction of M theory (basicly its the unified wave theory) I wonder what else is out there, I didn't even expect that such a thing could have been accomplished at this state.