How do you handle more senior engineers who are resistant to evolutionary design / iterative refactoring and TDD? How best do you shape the hearts and minds of your fellow colleagues.

Hi Uncle Bob, How social are your unit tests, If your domain code has a few well defined public api methods but multiple modules that service these public api methods, would you drive all test coverage from the public api methods or test each module independently at their boundaries? How about mocking and stubbing external calls which make test suites unpredictable. Clearly we should mock and stub, but how should we mock and stub, should we define gateway interfaces to abstract the explicit clients or mock the explicit clients directly. If gateway interfaces, should they be client specific or more generic and use case specific?

Hi Uncle Bob, Read and loved your book--Clean Architecture; curious on your thoughts for how component design and component coupling map to an AWS lambda FaaS world. Thanks!