Status: IN
Module isolation exhibits two complementary properties: each module is a hermetic, standalone unit with only stdlib dependencies and no real I/O (supporting independent testability), while operational conventions — error signaling strategies, eviction timing, failure reporting — remain module-scoped rather than codebase-wide (producing locally reasonable but collectively unpredictable operational surfaces). These properties appear to reinforce each other: standalone modules with no shared infrastructure naturally avoid convention coupling across module boundaries.
Pedagogical standalone design and architectural convention locality are mutually reinforcing consequences of module isolation
Depends on (SL): operational-conventions-are-module-scoped, deterministic-testability-by-design