> Top-level engineers should be spending their time implementing hard new projects, not maintaining old ones. Au contraire. Top-level engineers should still sp

> Top-level engineers should be spending their time implementing hard new projects, not maintaining old ones. Au contraire. Top-level engineers should still spend much of their time on maintaining projects they designed, otherwise they start forgetting what works in the long run and what does not. It's not that good engineer throws in some secret juice only most advanced know; it's that good engineer knows what makes problems when maintaining the system or scaling it up.