Situational analysis was advanced by Karl Popper in his book released in what year?
Situational analysis Situational analysis (or Situational logic) is a concept advanced by Popper in his The Poverty of Historicism. "Situational analysis" is a process by which a social scientist tries to reconstruct the problem situation confronting an agent in order to understand that agent's choice.
Viable systems approach The viable systems approach (VSA) is a systems theory in which the observed entities and their environment are interpreted through a systemic viewpoint, starting with the analysis of fundamental elements and finally considering more complex related systems (von Bertalanffy, 1968). The assumption is that each entity/system is related to other systems, placed at higher level of observation, called supra-systems, whose traits can be detected in their own subsystems (principle of system hierarchy).