Well no, but actually yes. Kind of like how you don't get requirements from talking to customers or "the business". You get requirements from demoing. If your

Well no, but actually yes. Kind of like how you don't get requirements from talking to customers or "the business". You get requirements from demoing. If your first demo is your prod deploy, then guess what, you've just deployed a proof of concept. It's a de facto thing that just happens even if you don't plan on it. In fact it happens BECAUSE you don't plan on it. More to this point: there are many different kinds of tests and what we are most commonly referring to is "regression tests". There are lots of bugs that are not due to regressions.