Notes: The table demonstrates the relation between DO and IO, and expresses the structural resemblance between being real and being known. The DO thus being possible, actual or general establishes our understanding of passive information, that is, information that has being independently of perception. The IO establishes its relation with DO by relations of similarity, contiguity or by generality, and the relation is possible only by means of inferences. Similarity is thus recognized through retroduction (or abduction), contiguity is established by deduction (or critique), and generality is defined by induction (or habit). Whenever information is interpreted, it enters the mind of the interpreter causing doubt – and this doubt causes the interpreter to form hypotheses (possibility), deduce consequences from these hypotheses (actuality) and evaluate or test the hypotheses (generality)