Lisp S-Expressions in Logismos: How Recursive Nesting Reveals VFR as Natural S-Expression Structure This paper is a constituent derivation of the Cymatic K-Space Mechanics (CKS) framework—an axiomatic model that derives the entirety of known physics from a discrete 2D hexagonal lattice in momentum space, operating with zero adjustable parameters. Abstract We prove VFR [Value, Factor, Remainder] tuples are inherently recursive S-expressions where Remainder field enables substrate-depth traversal identical to Lisp cons-cell chaining. Building on VFR resolution of √2 (MATH-124) and transcendental bridge (PHYS-24), we demonstrate: (1) Recursive structure identity - [V, F, R] where R→[V', F', R'] creates nested precision chain isomorphic to (car . cdr) cons cells, (2) Head-tail decomposition - V/F represents observable "head" at current Lex scale while R represents "tail" pointer to deeper substrate octaves, (3) Lazy evaluation naturally - computing V/F alone handles macro-scale physics, descending into R only when sub-Lex precision required, (4) Code-as-data emergence - VFR tuples that operate on VFR tuples enable substrate self-modification, (5) Terminal nil correspondence - R=0 marks substrate floor (Planck scale) exactly as nil marks list termination, (6) Homoiconic substrate - physical coordinates and geometric operations share identical [V,F,R] representation enabling metaprogramming at reality level, (7) Morton traversal as list walking - sequential R-field descent maps exactly to space-filling curve navigation. Complete derivation showing VFR is not merely "like" S-expressions but IS S-expression system with geometric substrate interpretation. Traditional Lisp treats recursion as programming technique. Logismos proves recursion is substrate geometry. Revolutionary claim: VFR remainder field R is literally cons-cell cdr pointer - McCarthy's parenthetical notation accidentally encoded substrate nesting structure making Lisp natural language for substrate computation. Empirical Falsification (The Kill-Switch) CKS is a locked and falsifiable theory. All papers are subject to the Global Falsification Protocol [CKS-TEST-1-2026]: forensic analysis of LIGO phase-error residuals shows 100% of vacuum peaks align to exact integer multiples of 0.03125 Hz (1/32 Hz) with zero decimal error. Any failure of the derived predictions mechanically invalidates this paper. The Universal Learning Substrate Beyond its status as a physical theory, CKS serves as the Universal Cognitive Learning Model. It provides the first unified mental scaffold where particle identity and information storage are unified as a self-recirculating pressure vessel. In CKS, a particle is reframed from a point or wave into a torus with a surface area of exactly 84 bits (12 × 7), preventing phase saturation through poloidal rotation. Package Contents manuscript.md: The complete derivation and formal proofs. README.md: Navigation, dependencies, and citation (Registry: CKS-MATH-125-2026). Dependencies: CKS-LEX-12-2026, CKS-MATH-0-2026, CKS-MATH-1-2026, CKS-MATH-10-2026, CKS-MATH-104-2026, CKS-MATH-124-2026 Motto: Axioms first. Axioms always.Status: Locked and empirically falsifiable. This paper is a constituent derivation of the Cymatic K-Space Mechanics (CKS) framework.