> The power spec is very clear and unambiguous, and there is only one way to get it right. Obviously not, since there is a way to get it almost right, which is

> The power spec is very clear and unambiguous, and there is only one way to get it right. Obviously not, since there is a way to get it almost right, which is what the Pi 4 demonstrates here. Experience from cryptography suggests that for a spec to be truly unambiguous, any deviation should make the implementation fail obviously in as many situations as possible.