Einstein was wrong, the statement that light is constant in all frames is inherently flawed and impossible. Einstein wasn't totally stupid, that is for sure, and the energy mass equivalence is one way of taping into the aether's energy, perhaps, if energy does equal to mass times speed of light squared. Note that the permittivity constant and permeability constants were not measured, but rather assigned. If they were measured pleas tell me how that was done. If not, then man somehow defined the speed of light, which is proposterous. Speed of light IS something, but not the way we think of it.