Why Hindsight Made Us Rethink Our Global Study Context

A team discovered that consolidating all study-related state into a single React context caused cascading re-renders on every quiz answer and introduced stale closure bugs when deriving mastery counts. Using the observability tool Hindsight, they traced cross-session behavior and realized the monolithic context made it structurally impossible to keep related state consistent without closure issues. The root problem was not the context pattern itself but overloading one provider with fourteen fields and five actions that updated nine states simultaneously.