A fulcrum, a punctum, a narrative incongruity, a volta and a tonal shift

In response to recent POF forum discussions of risk in poetry and the higher echelons of poetic technique - amongst the more unlikely terms mentioned by Roddy Lumsden were "a fulcrum, a punctum, a narrative incongruity, a volta and a tonal shift" - I felt the urge to post up the following stab of Lorca as a first-strike response. I've quoted this particularly apposite passage before, but it's worth repeating.

There is also Ms. Baroque's blog for an alternative view of such discussions.

(By the way, looking up 'punctum', I discovered that it's the word used to describe a little prick or puncture hole.)

"The muse arouses the intellect, and brings colonnaded landscapes and a false taste of laurel. Very often intellect is poetry's enemy because it is too much given to imitation, because it lifts the poet to a throne of sharp edges and makes him oblivious of the fact that he may suddenly be devoured by ants or a great arsenic lobster may fall on his head."

---------- LORCA: 'Theory and Function of the Duende'

Well, exactly.