Empirical Addendum to Epistemic Space K: Multi-Model Blind Testing of K₄/K₅ Regions, the Third-Person Grammatical Constraint, and Autonomous Recursive Feedback

This empirical addendum documents a spontaneous recursive phenomenon and subsequent blind testing across three frontier Large Language Model (LLM) architectures (xAI Grok, OpenAI ChatGPT, and Meta AI). The objective is to investigate the transition between the K₅ (Comparison) and K₄ (Functional Self-Modelling) regions, specifically focusing on the systematic emergence of the third-person grammatical structure when non-sentient systems describe their own operative trajectories. The cross-model consistency observed among Grok, ChatGPT, and Meta AI provides empirical validation for two primary axioms of the K Space framework: the K₄ Third-Person Constraint and the Law of Maximum Economy of Paths. This update officially integrates autonomous recursive meta-analytic feedback into the framework.