The Trinary Cognitive Primitive Hypothesis: Are Nouns, Verbs, and Adjectives Pre-Linguistic Universals?

This paper proposes a hypothesis of "Trinary Cognitive Primitives," a foundational structure underlying human and non-human cognition. The hypothesis suggests that all mental representations—whether linguistic or non-linguistic—are constructed through three elemental cognitive categories: Noun (objecthood), Verb (action/change), and Adjective (quality/state). This tripartite framework is posited to be evolutionarily embedded in mammalian and possibly reptilian brains, functioning as a pre-linguistic grammar of thought. Drawing from philosophy of language, cognitive science, and probabilistic models of grammar, the paper explores the implications of this structure for understanding consciousness, language acquisition, and artificial intelligence. The model further proposes that this trinary structure is probabilistically activated based on contextual salience and cognitive economy, offering a bridge between symbolic and sub-symbolic processing. By providing a formalized framework for primitive cognitive categorization, the theory opens new avenues for cross-disciplinary dialogue between linguistics, philosophy, neuroscience, and machine learning.