Someone recently lamented to me that try as they might, they can’t seem to instill a culture of non-manual testing in their team. This problem pervades startups, especially in those with a lot of newer developers. My theory: To foster a culture where software engineers are internally motivated to write good tests, make it harder to run your app locally and easier to write and run tests. To put it another way: rather than investing time in enabling people to run a standalone app on their laptops, invest time in making it easy to write tests.