An interesting idea that I've not heard expressed anywhere (but I'm sure is not original) The fewer test seams you have in your app, the better Agents are incredibly good at problems where there is a single test seam. Building a language, reimplementing a pure library. You test from the outside (by invoking the library, or running the language) and you check the results. Any further tests are added at that single seam. But when there are more seams, like: - Tests that test only a single…