No mathematical development of physics applied to a closed system that remains unchanged can show additional energy, a question of the internal coherence of mathematical formalism in physics. So if Dollard finds any in his equations, he's wrong. You don't have to be a physicist to understand it.
Symmetry only applies within each given reference frame. If you account for timedelay and multiple reference frames, nonzero solutions indeed become possible. For example, a photon emitted from both Earth and from near a black hole would require the same amount of energy from their given reference frame, but observing both photons from earth you would find the one emitted near the black hole may appears to have a higher energy (because it was emitted from a higherenergy region). https://qph.fs.quoracdn.net/mainqimg20477ea65dd6912ab948655b88d98221If energy is extracted from the "Dirac Sea", it must be shown experimentally and explained using equations including the "Dirac Sea". This extra energy cannot be inferred from equations that do not include it. Diracsea interactions are commonplace in Quantum Mechanics and often express themselves with virtual particles. Any formulae using virtual particles is interacting with this apparently homogeneous field. http://abyss.uoregon.edu/~js/images/virtual_photons.gifEric Dollar only has books to sell. Perhaps he has some interesting things but the fact that he does not have the support of exotic reproducible experiments and especially that he has the support of Murakami does not plead in his favour
Everyone makes a living somehow. James Clerk Maxwell broadcast his models to the community in much the same manner as Eric: https://books.google.com/books/about/An_Elementary_Treatise_on_Electricity.html?id=5QQKAAAAIAAJ&printsec=frontcover&source=kp_read_button#v=onepage&q&f=falseThis is, after all, the 'OverUnity Research' forum.

When you say something is impossible, you have made it impossible
