Thanks — that’s a fair question, and probably on me for not being clear.

I’m not trying to replace design work with tests. What I’m experimenting with is using certain tests (especially integration-level ones) as a way to surface and challenge assumptions that feel stable on paper.

In other words, the tests aren’t the design, but they’re sometimes the fastest way I’ve found to discover where my “separate design step” was incomplete or misleading.

Happy to clarify more if helpful.