"Poets tend to form loose groups - the "Romantics" or the "Imagists". And sometimes they write manifestoes in the name of these groups. This can be good. It forces the poet and the audience to think. But it can also be dangerous. It can turn into a branding device so that potential readers believe they know all they need to know once they know you've been associated with a certain group or position. It can freeze things in place. That's where thinking stops."

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I would make a huge distinction between theater improvisation and film improvisation. There isn't much improvisation in film - there's virtually none. The people that theoretically could be good at this in a theater situation don't necessarily do this in a film in a way that will work, because it's much broader on a stage. But in a movie, it has to be real, and the characters have to look entirely real because it's being done as a faux documentary, so there are even fewer actors that can do that on film.

— Christopher Guest