I'm thinking that if you had a fan, rotating really really fast, then according to relativity the ends of the fan blades would think that the center of the fan has less energy than they do, and the center would think that the ends have less energy than it does right? So if this fan was made of a conductive material, then both the center and the ends would try to send energy to the other right? And if the center and ends had significant mass you'd be dealing with a huge difference in energy right? So then you could put something between the center and the ends and collect all of the energy they're giving off? Trick matter into giving up it's ridiculously large amount of energy. Possible?