Subtle is the math

What is possible, what is necessary, and what is impossible in the Nature ? This is what philosophers try to respond, from the epistemology of modality. The philosophers are analyzing such a question by starting from the viewpoint that some laws of quantum theory, despite seemed to be impossible, are necessary, because were confirmed by math and experiments. But are we sure that what the math is pointing to us is exactly what we think it is pointing to ? Here such question is analyzed, because the author's effort to eliminate a paradox, in his theory of electric fields composed by fermions of the quantum vacuum, revealed to him something much more important than the own elimination of the paradox, because he finally understood that what is subtle is not the Lord, as supposed by Einstein. What is subtle is actually the Mathematics. Thereby, before trying to respond the question on what is possible, necessary, or impossible in Nature, we have to be sure about what the math is pointing out to us. The most reasonable should be to suppose that it's impossible that the imaginary number plays any role in the physical mechanisms from which Nature works. And that, as the quantum theorists use the imaginary number in their mathematics, the conclusion is that they use a math that proves that the impossible is possible. Nevertheless, as will be shown here, the own Lord did be possible what seems to be impossible.This is illustrated in the cover of the book: in the fraction of seconds when the Universe was being created, the Lord pushed «-1», forcing it to enter inside the square root.