When we souls are pure and complete so will the elements be as well. 

This is interesting to speculate.since 1937 think of the advancements as the ancestor souls become more powerful and light aware. Technology seems to follow human consciousness. My engineer sons are already exploring water and light and quantum physics. 

Their teachers are building smart homes that respond to the atmosphere and the human. Ie opening and closing walls and panels almost like living in a conscious dynamic caring shelter rather than a tiny enclosed box. 

Harnessing soul energy and babas current is practice for ruling matter then. When we at returned to our pristine conditioned. 

Remember we teeny tiny star-like beings have infinite unlimited power at the beginning. (which is really now) with the illusion gone from our eyes. 

I faintly remember power being generated with a combination of the elements somehow. Everything was alive nothing inanimate.