I used to watch some tutorials on theYouTube to follow my classes at college. Then, I figured out that there are some of those tutorials which are made to fool/mislead vestibular students, in other words, they do this to eliminate the competitors. They teach the subject wrong to them just because they want (to jeopardize vestibular takers' grade) everybody to get a bad grade/to flunk on the vestibular exam. Luckily, I've never used tutorial videos which were explaining wrongly(which were providing erroneous pieces of information) and harming the students. In my opinion, it should be construed as an offensive and they should be punished.