One can establish the basic tenets of pragmatical analysis by combining Peirce's and Goffman's views.
Thus, rhetorical definitions and pragmatical definitions often do not coincide.
As a rule, pragmatical definitions depend on the action's outcomes.
Purposive action is key to pragmatical analysis because all pragmatical definitions are related to actions' outcomes.
Again, we must distinguish between the action's conventional meaning--ascribed to the action according to some established social rules--and its pragmatical meaning, which depends on its expected outcomes and the analyst's judgment about these outcomes according to different frameworks.
The success of a purposive action is a pragmatical issue.
However, pragmatical analysis implies that the action's extension can reach its relevant outcomes.
An action's outcomes as a source of meaning lie at the core of both pragmatical analysis and EBO.
Perhaps it is useful to EBO studies to emphasize pragmatical analysis in intersubjective communication as a choice means for controlling objectivity.
Let's remember that the success of a purposive action is a pragmatical issue and that pragmatical definitions depend strongly on frameworks.
Thus, pragmatical analysis can prove useful for calling attention to the difference among human failure, wrong application of a right explanatory theory (or wrong application of sound doctrine), and the case in which theory proves wrong (when evolutions in the environment or technology supersede doctrine).