Abstract As AI systems advance, a significant portion of human intellectual and creative tasks is becoming automated. Yet, not all human capabilities are replaceable. Part 1 of this report analyzes why uniquely human abilities are rising in value within the structural changes of the AI era, and establishes the criteria for assessing “replaceability.” By contrasting the operational mechanisms of humans and AI—consciousness-driven vs data-driven processes—this section defines the core factors that will determine future competitiveness. Part 1 provides the conceptual foundation for the detailed exploration of the twelve irreplaceable human abilities in Part 2 and beyond.