You are helping them make the right decision for themselves, which makes for an interesting challenge. On the one hand, you’re going to need to be opinionated. On the other hand, you’re going to also have to be informative and persuasive, telling them what they need to know about your subject in order to make a decision for themselves, while also arguing your point of view about your experience with your subject.
In some ways this is very similar to teaching - we are not teaching them to write this one essay, but how to judge their writing for themselves in all other essays
