Most things stay the same, yet when they are copied, mistakes are made. Changes are made. It is not copied quite exactly as it was before.
It could not be, because something in the future is being created under different circumstances. Energy is constantly transferring so that is way things can move, and they can change.
When energy is used it dies. It becomes cold. Something unlike what it was before. What happens when all of the energy has been transferred? Is energy ever not usable?
Can energy be brought back to life? How is that done? Is this our function to bring life back to death? To resurrect life? I think so.