How do "good" college teachers present information? (ARW homework)

According to Meiland, a "good" college teacher presents information in the following way.
In general, they present in the sense of ''what is currently believed''. But it is not enough to make good students. The college students must have critical examination and evaluation after understanding material.
I agree with this opinion. In high school or earlier education, we answer the question that have correct answer made by teacher already. But in our life, almost all of question we face is not have perfect answer, like changing the job, how to use the money, whether or not you telling affection to someone,,, and so on. there is no answer and we have to make acceptable reason in our own efforts or we might regret for way we decide. So I agree with this opinion but I also worry about dangerous of critical thinking. When we have critical examination and evaluation TO CRITICIZE, there is no meaning because our purpose why we have such things is to practice the skills to make or choose better way.So we must not lose the purpose why we study.