It's not my fault

有个医术很差的大夫，从来没有治愈过一个病人，他的朋友指责他：“难道你不知道怎样治病吗？”“你错了，我的朋友。”这位医师回答道，“我非常了解我的技术，我完全按照医学教科书治疗病人，该受指责的人不是我而是病人，因为他们从来不按照我的书来发病。”

There was a doctor that had very horrible medical skills,and could never heal a sick person,his friend accused him, "So you're saying that you don't even know how to cure a disease?""You're wrong,my Dear Friend."The doctor replied,"I understand my techniques very well,and I follow the medical book completely,the ones who should be accused is not me but the patients,because they never follow my book to get sick."