Reusing the bounded-window measurement pattern from an adaptive concurrency controller to detect query outliers — except answering ‘is this unusual relative to normal?’ needed a lot more state than reacting to the present moment did.
A database cost project that started as ‘move data to cheaper storage’ ended by eliminating the biggest dependency entirely, once the team stopped treating an existing implementation’s requirements as fixed and started asking what outcome each one actually served.
A whiteboard design and the system that ships from it are never the same thing. Revisiting a project well after handoff means reconstructing what actually shipped together, not grading it against the original diagram.
LLMs make it possible for one person to prototype several plausible end-to-end designs before a cross-team feasibility conversation starts, turning a blank whiteboard into a concrete comparison of trade-offs.
Rolling up team estimates for an ambitious cross-team project hides the architectural choices behind them. Real feasibility work means simulating how the pieces fit together before anyone estimates.