ABSTRACT
A foundation is a sufficient condition of something (e.g., onemay consider foundations of objective reality, cognition, an idea or activity).
Recall that we understandmethodology as the theory of organization of an activity. Then it seems possible to identify the following foundations of modern methodology (including research methodology):
1 The philosophical-psychological theory of activity [24, 39]. 2 Systems analysis [2, 4, 28] and systems engineering [13, 40] (the theory focused on
the system of research or design methods for complex systems, as well as methods to find, plan and implement changes for eliminating the existing problems.
