In InnerSpace we do not define the concept. We use it —the concept of concept as such— as the smallest possible structure that still generates worlds. It is trivial and infinite, atomic and modular, foundational and ungraspable. Every attempt to explain it merely demonstrates it. Every serious theory of concepts is correct—simultaneously—because the concept of concept, the sum of what concepts have in common, is such that it absorbs all models without being exhausted by any of them. In SDL InnerSpace, the concept of concept is treated as an axiom, not a problem. It functions as a transferable module across media and as a structural atom from which incompatible realities can be constructed. To demand a definition is to misunderstand its role. The concept does not explain meaning; it produces it.
The InnerSpace concept of concept is intentionally and radically multifunctional. As such, it forms the foundation of a functional idealism: a system in which the idea is the primary category, yet one that does not oppose materialism. Instead, materiality is embraced, operationalized, and treated as a module within the system itself—serving as both a necessary component and the ultimate proof of the system’s validity. It is a transcended idealism with a complex superstructural meta-layer, that treats materialism as its own realization.











