What I usually do, and also did here, to evaluate if a course interests me is to look at some of the assignments. Here they present three PDFs with a number of

What I usually do, and also did here, to evaluate if a course interests me is to look at some of the assignments. Here they present three PDFs with a number of assignments of varying difficulty: https://ocw.mit.edu/courses/mathematics/18-s097-applied-category-theory-january-iap-2019/assignments/ https://ocw.mit.edu/courses/mathematics/18-s097-applied-cate... If you find that being able to answer a high enough number of assignments you know that the course is for you. If not, the lectures may still be of interest, but it is much less likely the less of the assignments you think are worthwhile for you. PS: Question 4 in problem set 3 is quite (in)famous :-) Just the headline: > Question 4. A monad is a monoid in a category of endofunctors (harder/optional) So, if you want to be one of the few people who actually understand that sentence when it is quoted as a joke (usually in programming forum whenever monads come up), this is your course.