> The cost of shoring up behavior with tests ahead of a restructure has gone down because of AI. Yes. But the ease of not doing that and instead just getting

> The cost of shoring up behavior with tests ahead of a restructure has gone down because of AI. Yes. But the ease of not doing that and instead just getting a brittle set of three-quarters-baked tests is extremely high! And many people seem happy to go from "a few human-written mediocre brittle tests" to "a bunch of AI-written mediocre brittle tests" because it is an objective improvement and the people who weren't avoiding speculative structure and looking for the write boundaries before are happy to also not do so no. So completely agree with the "take advantage of the tools this way" but I also wouldn't claim it's a reason to no longer worry about if you're building the wrong castles in the sky too early, because perfect refactor-proof testing contracts are still usually pretty hard to design.