Spacetime tells matter how to move; matter tells spacetime how to curve.
I have witnessed the tremendous energy of the masses. On this foundation it is possible to accomplish any task whatsoever.
Laws of nature have no physical properties of mass /energy. They are platonic truths in transcendent realm that create & govern the Universe.
There are plenty of things that are unknown, but are assumed reasonably to exist, even in the most basic sciences. Maybe 90 percent of the mass-energy in the universe is called "dark," because nobody knows what it is.
You may not feel outstandingly robust, but if you are an average-sized adult you will contain within your modest frame no less than 7 X 10^18 joules of potential energy—enough to explode with the force of thirty very large hydrogen bombs, assuming you knew how to liberate it and really wished to make a point.
We know that if supersymmetric particles exist, they must be very heavy; otherwise we would have spotted them by now.
Freedom released the energies of the masses not by exhilarating but by unbalancing, irritating, and goading.
I am proof that Einstein's "e equals m c squared" is wrong. My mass has increased, but my energy has dropped.
When the film stock disappears, the matter - because movies are matter - (disappears). The laws of this have been established by Newton, Einstein, and others: there is a correspondence between light and matter, and light is matter. And energy.
In fact, there's really only one thing that everything's made of; it's energy.