About the abstraction of a software system´s solution

Physical reality is the source of biggest abstractions, which are the base of scientific knowledge and of all the other forms in which reality is perceived. All human creations are the consequence of some interpretative and explaining systems, in the middle of which we can always find the concept of model. A model is "a key to a given problem". We give an answer to the question: "What should we understand from the syntagm in software engineering".