Weinberg (1988) hypothesizes that indexing fails the researcher because it deals only in a general way with what a document is “about” and does not focus on what it provides that is “new” concerning the topic. She maintains that this distinction is reflected in the difference between “aboutness” and “aspect,” between “topic” and “comment,” or between “theme” and “rheme.” She fails to convince that these distinctions are really useful in the context of indexing or that it might be possible for indexers to maintain such distinctions.