A smartphone

A smartphone holds tens of thousands of parts made across dozens of countries. One spec off and nothing assembles. But that fit was not arranged after the fact. It was decided before anything was made. The design is not the list of parts. It is the relationship between them.

첫째 단서 — 구조Tens of thousands of parts, sourced across dozens of countries. One specification off and nothing assembles. That fit was not arranged after the fact. It was settled before anything was made.
둘째 단서 — 목적The name says telephone, but calling is one function among many. What the object actually does is gather a person's whole day into one hand — and that purpose was fixed before the parts were chosen.
셋째 단서 — 질서Change one component and the heat changes; change the heat and the battery changes. So the design is not the list of parts. It is the relationship between them. Scattered they are nothing. Arranged they work.

All of it began as a first line someone drew on paper.