A design system is a set of decisions you no longer have to argue about. The prototype answered in a day what the meeting could not in a month. Dark mode is a second palette, not an inverted first one.
Lessons
We removed three options and support tickets dropped by a third. Whitespace is not empty; it is doing the grouping for you. A design system is a set of decisions you no longer have to argue about. The prototype answered in a day what the meeting could not in a month.
Users scan, so headings carry more weight than paragraphs. Type scale decisions ripple into every component downstream.
Going further
An error message should blame the system, not the person. Users scan, so headings carry more weight than paragraphs. Consistency is kind, but clarity wins when the two disagree.
Contrast is not a style choice; it is whether people can read the page. Type scale decisions ripple into every component downstream.
The short version
The prototype answered in a day what the meeting could not in a month. We tested with five people and found the same problem four times. Motion should explain a change, not decorate it.
Good defaults are the design most users will ever see.
An error message should blame the system, not the person. Motion should explain a change, not decorate it.
Consistency is kind, but clarity wins when the two disagree. Whitespace is not empty; it is doing the grouping for you.
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