translation.en: because the textbook is helping you in all the wrong ways: It's buying you out of your obligation, for patient problem solving and math reasoning, to be less helpful.
translation.zh: 因为教科书在以非常错误的方式帮助大家。 它在免去大家 对耐心问题的解决和数学推理的责任，更没有帮助性。