I am not saying you should not test. To me it seems obvious that you test what you create. But it is impossible to test everything. When you fail fast you are

I am not saying you should not test. To me it seems obvious that you test what you create. But it is impossible to test everything. When you fail fast you are quicker to notice it yourself. And when it was deployed without you nothing the bug it will still surface very early because it breaks your app. Broken gets fixed, shitty lasts forever.