Developmental Systems Theory (DST) has the merit of revitalizing the concept of system and applying it in a phenomenal field that can only be explained with precision by means of this paradigm. However, DST is a systems theory without systems, since it does not use the concept of system beyond the simple mention of the conceptual framework (that is, GST) to which it is ascribed and through the use of the principle of unity of system and environment. One of the most glaring contradictions of DST is that it does not use the powerful conceptual baggage of the systems approach that it claims, or, when it does, it makes the same mistakes as structuralism. On the contrary, conceptions are born within it that, pretending to introduce new things, what they actually do is draw attention to the obvious as if it were something new (for example, to the ostensible fact that "there are processes"). In this sense, around GST and DST new acronyms arise that do not contribute anything that is not already contained in the old but in force systemic approach.