Doctors found out that washing their hands caused less people to die, and it's a bit of a nuisance but totally worth it. Software devs have not found out that

Doctors found out that washing their hands caused less people to die, and it's a bit of a nuisance but totally worth it. Software devs have not found out that anyone dies unless we do strict tdd. But we have found out that unless we have a good amount of automated tests, the software becomes brittle and hard to change. TDD is more of a style that some swear by that has alleged properties making everything better, like the way doctors wash hands in a peculiar way. But just "washing the hands" thoroughly would probably also help people not dying.