Do you think the promo video (music video) is going to be a useful new genre for new filmmakers to develop ideas?

Well, I doubt it only because they're so small and also, I don't personally think that commercials are a very good way of learning to make film, to make narrative films, story pictures. I think that the emphasis in them is a great deal too much on effect. I think it was better in my day, if you like, when I learned a bit making documentaries and that gave you, I think, more opportunity of learning about film, about cinema, then it does trying to make these very snappy, purely effected commercials or promos.

Lindsay Anderson
from an unidentified video interview I found on YouTube