Whatever the meaning, assigned to the term, complete; the requirement for a unified theory, seems to be a necessary one; because every element of the physical reality, must also have a counterpart, in physical theory ||

If, without in any way disturbing a system; we can predict with certainty, that is, with a probability equal to unity, the value of a physical quantity; then there must exist, an element of physical reality, that corresponds directly; to this known, physical quantity ||

More generally, it is shown in quantum mechanics; that if operators corresponding to two physical quantities, do not commute; such as A times B, not being equal, to B times A; then the precise knowledge of one of them, also precludes such knowledge of the other; and it is believed currently, that any attempt to determine the latter experimentally, will alter the state of system; in such a way as to destroy the knowledge, of the first value ||