no, not a typo. doing this kind of thing you have to be really cute about it.
for example i think a vision by yeats(!) is great. i think that huge book ted
hughes did on shakespeare is a sloppy ill conceived and unconvincing mess.
ie not cute enough.

are these good metaphors? do they fit. do they help. do they clarify.
etc etc etc do they seem to flip in and out of being metaphor at all

that sort of thing.