I’ve intentionally covered loops a lot this week. It’s been the talk of the virtual town of late, so it’s an important concept to understand as AI-assisted software design and development continues to mature.

MC Dean pulls it all together practically for designers in this piece. She reminds us that designers need to stay in the conversation; be in the room where it happens:

The conversation about AI and design tends to run in one direction: here are tools you can use to do your job faster. That framing keeps designers in the task loop. Tools help you execute. The loop stack shows you where the real work is.

The real work is authoring the system loop. Writing the specifications that constrain how AI behaves. Encoding the quality standards that define what good output looks like. Making the judgment calls that no loop below the oversight layer can make on its own.

Taking a “loop stack” built by engineers, she adapts it for designers:

At the base: the execution loop. The model fires, tool calls happen, tokens generate. This is genuinely not your concern. You don’t need to understand transformer architecture to design well with AI, any more than you need to understand TCP/IP to design a good website.

One layer up: the task loop. The agent works on a specific thing until a condition is met, then stops. Who defines that condition? You do. “The task is complete when the output meets the brief” is a design decision. What counts as meeting the brief is yours to specify.

Then the product loop. This is the experience layer, the thing a person actually encounters. Does the flow hold together? Does the output feel like it belongs to a coherent system? Does it match the quality bar? Every heuristic you’ve ever learned, every design principle you’ve internalized, lives here.

Then the system loop. This is where the AI gets better, or doesn’t. The patterns it learns, the constraints it operates within, the values it embodies. Design systems, behavioral specifications, brand guidelines, content principles, tone of voice. Everything you’ve encoded about what good looks like. This is the layer that trains the loops below it.

At the top: the oversight loop. This is where human judgment lives permanently. Not as a checkpoint at the end. Not as a review gate before launch. As a continuous presence that can redirect anything in the stack at any time.

This is what we call “craft”.

In the full post, she shares a prompt for you to try that illustrates how the loop actually works. Go try it.