evaluation-purity-enables-complete-minimal-architecture
IN derived (depth 6)
Evaluation purity — uniform, deterministic, side-effect-free justification validity checking — is the concrete computational property that makes the completeness-minimality unification possible: purity simultaneously grounds context-agnosticism (enabling the minimal primitive set to handle all cases uniformly) and ensures that architectural completeness follows from rather than despite minimality (because pure evaluation needs no case-specific logic).
Summary
The reason the system can be both fully capable and radically simple is a single technical property: checking whether a justification holds is pure computation with no special cases, no side effects, and no dependence on context. Because validity checking never needs to peek at metadata or branch on where a belief came from, the small set of primitives handles every situation uniformly — so nothing extra is needed for completeness, and nothing can be removed without losing it.
Justifications
SL — Purity is the bridge between the minimal primitive set and complete architectural coverage
Antecedents (all must be IN):
- evaluation-purity-grounds-agnosticism-and-minimality — Evaluation purity (uniform, deterministic, no metadata inspection) independently grounds both context-agnosticism (identical results regardless of timing/origin) and semantic minimality (no special-case logic), making them co-occurring consequences of the same architectural choice rather than causally related.
- completeness-and-minimality-are-unified — The reasoning-and-revision architecture achieves completeness through minimality rather than despite it — both forward truth computation and backward belief revision derive from the same small set of primitives (outlist, disjunctive truth, vacuous validity), so completeness requires no feature accumulation beyond what minimality already provides.
Dependents
These beliefs depend on this one:
- evaluation-purity-grounds-dialectics-through-minimal-architecture — Evaluation purity — uniform, deterministic, side-effect-free justification validity checking — enables the complete minimal architecture whose negative semantics ground deterministic dialectics, establishing a causal chain from the most fundamental computational property through architectural completeness to dialectical reliability.