But you were ONLY talking about unit tests for catching concurrency bugs; bugs which often fall outside the scope of a unit being tested. Nobody disagrees with

But you were ONLY talking about unit tests for catching concurrency bugs; bugs which often fall outside the scope of a unit being tested. Nobody disagrees with your point about the importance of unit tests. But the way you present that point is more than a little naive (and that’s the polite way of putting it).