The text explores the relationships between concepts and their hierarchical organization based on the principles of superordination and subordination. The author argues that establishing these relationships always involves comparing the content and the scope of the concepts. A fundamental tension exists: as a concept becomes more general and gains wider extension, it loses specific content. Consequently, abstract thinking inevitably moves away from concrete realities, which possess unique characteristics alongside general ones. The document describes abstract thought as a sieve that filters out unique properties of facts, regardless of whether more general properties are truly more significant than unique ones. Finally, the author questions the methodological productivity of focusing solely on the most frequent phenomena, suggesting that ignoring unique or less general features in favor of broad abstractions may limit the depth of understanding and scientific progress.