One of the possible matters for discussion between Web architects and philosophers relies in the use of the term 'ontology' by the former. Whether many computer scientists declare that their 'ontologies' have nothing to do with the philosophical concept, we must note the analogy between their positions and the positions of the Logical Positivism in the 1930s. However, drawing a guaranteed lineage is extremely difficult. Indeed, in computer science papers, bibliographical references to ontologies usually lead only to a 1991 short paper. Hence, our article is an 'inquiry' in search of a chain of descent from the 1930s to 1991.