Believe it or not but we hold mechanics to a much higher standard than physicians. If your mechanic installs your rod caps backwards and you throw a rod he's in deep do-do and you'd consider him to be incompetent - if your Doctor leaves a twist in your colon and it damn near kills you - it isn't a mistake, or error, it's considered a bad outcome - you can't even sue unless he did it on purpose, or because he was drunk or something. Incompetency isn't malpractice, go figure.