The React Concept That Broke My Brain (And Why It Was Actually Simple)

A developer discovered that moving state to App.jsx resolved fragility issues in a colored pad grid project, finally clarifying React's one source of truth concept. Separately, the creator of mcpgrade identified a systematic failure in an LLM-powered eval. Despite a perfect static score, the context7 server failed tool selection 62% of the time. This discovery highlights a generalizable failure mode affecting many current agent benchmarks used to evaluate MCP server performance and tool selection.