¿Porque no los dos? QA teams and devs write totally different tests. Devs go about it to help future refactoring, e.g. codify what the feature is supposed to d

¿Porque no los dos? QA teams and devs write totally different tests. Devs go about it to help future refactoring, e.g. codify what the feature is supposed to do, so that if we change it in the future, we will not inadvertently break something. QAs write tests that look from the point of the user. QA tests are arguably more valuable, but writing testable software itself can only be done if the devs too are invested in the task. Maybe we can form DevQA teams? the way we did for DevOps and DevSecOps? But alas, I still think having everyone though out the whole stack invested in writing tests makes the the final product better.