> The Scream Test: If you see something and you don't know what it does, remove it and see if anyone screams. Spoken like someone who works on pure software, w

> The Scream Test: If you see something and you don't know what it does, remove it and see if anyone screams. Spoken like someone who works on pure software, with Undo! Out in the physical world, the screaming would be followed by a loud crash. You don't touch anything if you don't know what it does. That's how equipment is destroyed, and people die.