There is a part of this work I had not named in the previous articles. It is not technical. It is the feeling of moving forward without knowing exactly where to.

The estimate was to finish the tokens in one week, and it did not happen. Creating the token was the easy part; migrating the system to them in production took longer.

In three days we defined the governance process and the way to create, edit, and update tokens, in Figma and in code, so the team can keep maintaining them afterwards.

The mistakes Claude Code made in earlier experiments showed us the map of what we needed to document in the Harness Design System.

Before choosing the first component of the Harness Design System, I had to decide what comes before the components: the order between humans and AI.

How AI is changing product design work at Prolog, and why I call the discipline of giving AI context and criteria Harness Design.