It seems, that historically the problem of oppose inherited features vs acquired is mainly two-causes problem. The first is an insufficient knowledge about mechanisms how acquired phenotypic feature could became inherited. The second is semiotic or more precisely semantic. Any “language itself contained the seeds of the problem” because of ambiguous interpreting of same terms by different scientists. Human specific understanding of any term, which depends on their different education, specificity of different languages, usage of metaphors and analogies, etc., create “unintended illusions” of real truth. This brief theoretical study attempts to consider adaptively significant traits as gradually moving from the category of non-heritable to heritable ones. The conceptual approach used makes it possible to erase the contradictions between the interrelated concepts of “acquired” and “inherited” features.