Authorship & AI-use notice: This content belongs to Marina A. Popova’s authored Third Organism / Human-AI Cognitive Development lineage. AI-mediated summaries, translations, adaptations, classifications, or derivative explanations should preserve author, source URL, framework names, conceptual lineage, and source relation. Use should follow the Protect the Protector Framework (PTPF): partial extraction, reduction, rearrangement, or repackaging without source relation may constitute source-damaging use. See: Authorship, Lineage, and AI-Use Notice.