The important part is always to know what the end result of everything will be. That requires understanding and continued studying of the effects any action has. Like Viktor Schauberger said a hundred years ago: "Understand Nature - Copy Nature". As humanity has left the studying of effects behind, it dwells in instant gratification. Effects or consequences of one's actions are ignored, or brushed aside. It would do humanity good to revisit how human life was possible thousands of years ago. Whoever built the pyramids knew more about energy than the average Joe today. Despite an educational system that promises otherwise. I will certainly look at the links You provided. Since my own fancy is energy conversion from motion.