I think it also teaches that Postel’s robustness principle isn’t always a good thing. If the MacOS filesystem was not case-insensitive, i.e. it was _less_ libe

I think it also teaches that Postel’s robustness principle isn’t always a good thing. If the MacOS filesystem was not case-insensitive, i.e. it was _less_ liberal with what it accepted, the reported issue wouldn’t have happened.