[user104658]

["The Answer Might Surprise You!"]

I agree with the psychologist's middle ground stance. Include the warning in the prospectus material for the course along with an outline of topics that will be covered, to allow people to decide whether or not they are in the mindset to be able to take on the course in the first place, and then there should be no reason to micromanage it at a later date for every individual class or lecture. The warnings about the subjects that are likely to be covered are clear from the outset. A good compromise, surely.