Some people are quite comfortable tackling a new subject simply because it is new.
Acquiring knowledge is, for these people, a bit like climbing Mt Everest or any other major mountain peak. They do it because it is there, and they feel somehow compelled to master it. For most of us, however, this sort of exercise rings hollow. Maybe it is just because we feel we have more important things to do than tilt at someone else's windmills or exhaust ourselves trying to prove that we are capable of accomplishing what we set out to do. If you feel that way too, it is worth taking a few minutes at the beginning of the course to provide at least some justification for what we are doing.