NileRed and other Maker Channels are great to demonstrate that. In every video, there's 1 - 2 of these situations - Nile has been following some documented, established procedure which should result in a specific reaction and it looks decent to the layman - and then it just doesn't work at all. And then he re-does pretty much the same thing and it works.
I can't imagine how frustrating that can be. And then you have to do it with something you don't even know works. Kind of like dealing with obscure retro computers. Does it still work? No one knows. What does it do if it works? No one knows. Can it even function or are parts missing? That's right - no one knows.
