Why design systems need editorial rules, not just components.
A component library can be technically correct and still produce a messy product if the writing and hierarchy are not disciplined.
A design system is not just a set of components. It is a set of decisions about what should be said, what should be emphasized, and what should stay quiet. Without editorial rules, the system can keep a product visually consistent while still allowing the content to drift into noise.
The most useful systems define tone, hierarchy, spacing, and content length together. That way a card, a banner, and a pricing table all feel like parts of the same product, not different teams borrowing the same palette. The discipline shows up in the small things before it shows up in the page.
We have found that the best systems can survive new content from new people without degrading. That only happens when the rules are legible enough to guide both designers and engineers. Otherwise the system becomes a beautiful constraint with no practical authority.