3 Development Anti-Patterns Disguised as Best Practices

**Executive Summary:** This article discusses trade-offs in software engineering: it advocates code reuse but warns against reusing test and implementation code in ways that invalidate tests, explains when duplicating data (denormalization, replication) is appropriate for performance and resilience, and cautions against prematurely engineering for scale; the author recommends using common sense and team feedback rather than rigid adherence to rules.