Anything could be argued to be a matter of opinion. After all, perhaps reality is just an illusion. But if we accept reality and a time continuum, then a hierachy introduces itself of opinions that are more or less in accordance with the observed reality. If we conversely assume that all opinions are of equal value in terms of accordance with reality and "the truth", then all discussion and dialogue and TT is meaningless. So it is of paramount importance that 5555's hypothesis is refuted.