Inform thyself
“There are different types of supervisors. And not all types of supervisors are open to discuss possible research ideas with the students. So, there are supervisors who are treating their students as “slaves” to delegate some of the not-so-convenient research work they have to do. But that’s also, I think, the duty of the student to get information about the type of supervisor they are looking for.”
(Günter Müller-Stewens)