DESIGN SYSTEMS ARE A COLLECTION OF DECISIONS

Summary from the TLDR Design newsletter

Design systems amount to collections of already-made decisions, so mechanical checks can prove straight from the artifact whether an AI agent used real components and correct tokens. Judgment-based evals still have an answer key when the system has documented a decision, like a required confirmation pattern for destructive actions. Visual evals work against a known reference, but deciding whether a new visual direction deserves to exist should stay with people.