On changing categories

Although it is not still clear if the time passing is a result of world changing, or reversely, the world changing is a result of the time passing, I think it is very clear the changing in the external and internal world of the subject is real. The paper examines, from a logical point of view, the abstract categories of changing, no matter the field involved. More precise, it provides the complete list (in the author's opinion) of distinctive types of changing, classified in two fundamental types: a) changing of first order, and b) changing of the second order. Based on this classification, certain analyses and assessments are delivered, regarding the logical features of them.