The Constructibility Principle

The issue with current scientific models is that many models are speculative or paradoxical constructions central to philosophy of cosmology. The Constructibility Principle in this paper introduces a demarcation criterion. Essentially, what cannot be built cannot be claimed. Something that is to be built means realizable through logical or mathematical construction, symbolic or computational simulation, or operational and physical procedure. Unlike typical mere imaginability, Constructibility requires an explicit path by which typical models could in principle be tested. The principle is broadly applied to most philosophy paradoxes, to speculative cosmological works such as eternal inflation, many-worlds interpretations, and anthropic reasoning, and possibly to problems in artificial intelligence. Situated in the history of demarcation debates, from constructivist mathematics and operational definitions to falsifiability. The proposal does not close inquiry, but provides a systematic filter that could clarify boundaries, harden reasoning for imaginative narratives.