The fundamental concept of method, the one on which all the others depend, is
logic. The distinguishing characteristic of logic (the art of
non-contradictory identification) indicates the nature of the actions (actions
of consciousness required to achieve a correct identification) and their goal
(knowledge)—while omitting the length, complexity or specific steps of the
process of logical inference, as well as the nature of the particular cognitive
problem involved in any given instance of using logic.