What Rules Significance?

Abstract Previous papers in the Worldhood framework argued that inhabitable worlds emerge through the organisation of significance. A world becomes possible because some differences matter more than others. Subsequent investigations examined the minimum conditions required for worldhood, the role of meaning in the emergence of experiential reality, the possibility that significance occupies a fundamental position in world-formation, and the developmental processes through which significance becomes reinforced and stabilised. Yet an important question remained unresolved. If significance is central to the emergence of worldhood, what governs significance itself? This paper investigates the significance-selection problem: why some possibilities become meaningful while others do not. It argues that significance cannot be arbitrary because a world requires the selective organisation of relevance. The analysis examines several constraints that contribute to this process, including embodiment, temporality, social inheritance, reinforcement, and possibility structures. Together, these factors help explain how significance becomes distributed unevenly across experience and how relatively stable worlds emerge from a field of possibilities. The paper proposes that significance is governed not by arbitrary preference but by processes that selectively organise possibility into inhabitable worlds. Worldhood, therefore, depends not only upon significance itself but upon the principles through which significance becomes organised. Understanding those principles may illuminate both the emergence of experiential worlds and the conditions under which any world becomes possible.