I've written so many tests in my life I think I know what I am talking about. It's not naive, it's what professionals do. Learn to separate tests that use outs

I've written so many tests in my life I think I know what I am talking about. It's not naive, it's what professionals do. Learn to separate tests that use outside resources and behave undeterminastically from the ones that are never flaky, make sure to cache the latter. If you don't do that you're still in the dark ages of testing when tests are a pain to touch and fail all the time for no reason.