> Imagine you're teaching people carpentry. There is a really nice automatic screw gun that accepts a cartridge of screws all lined up automatically so each one

> Imagine you're teaching people carpentry. There is a really nice automatic screw gun that accepts a cartridge of screws all lined up automatically so each one loads in place after the last one. It is super easy to use and people can get straight to fastening beams together. But the device is very expensive, and they cannot be repaired if they break, [...] Wait, let me stop your metaphor right there. How often do you imagine end-user software like Photoshop or MS Office actually "breaks" in a way that actually requires "repair"? Imagine if you will, that most of the time that your magic screw gun happens to jam, that simply unplugging it and plugging it back in again magically cleared the problem up, and you could continue where you left off.