Don't Treat "Module Internals Don't Matter" as Unconditional Subtitle: Urgency raises soft boundaries. A rules file pushes back behavior, not understanding. 2026-09-29 The essay Why the Best Software Advice Is the Hardest to Follow splits advice into two kinds: Practical advice: small functions, no magic numbers, clear names. Teachable. Checkable. Judgment advice: a wrong abstraction costs more than duplication; keep it simple; don't repeat yourself. No standard answ...