This is true even for non-consultants. If you're the only person who understands The Thing you're in for a world of hurt because whenever it breaks it's your pr

This is true even for non-consultants. If you're the only person who understands The Thing you're in for a world of hurt because whenever it breaks it's your problem. I've been at companies where I rearchitected a piece of software and unfucked some key business process, but it made things worse because the number of engineers who understood it went down. And I'm not talking vanity "paying down tech debt" rearchitecting, I'm talking "people get paged because the product doesn't work" went from 33% of deploys to ~0%.