I don't think you can really give him a point for the inefficiency remark; If something radically changes, and you haven't any automated tests, then you're goin

I don't think you can really give him a point for the inefficiency remark; If something radically changes, and you haven't any automated tests, then you're going to have to manually test the changed code and anything related that it will impact. If the change is something core to the app, then this will mean manually testing the whole thing. If you had a bunch of tests you could just re-run, then re-testing the entire system becomes trivial (it's a given that you'd need to rewrite the tests for the changed parts, but if your tests are written well, then you won't need to rewrite them all).