Here's my comment on a post by Joannie Stangeland, in which she mentioned how "At the Mighty Tieton LitFuse workshop, Kathleen Flenniken talked about how each line of a poem could (or should) contain a surprise—so that if you looked at that line on your own, even out of context, you would find something new or disturbing or delicious."

My comment:

For a while back in the late nineties, I tried to make EVERY line break in every poem as meaning-laden as possible. Two results:

1) I failed.

2) Even when I came close to succeeding, the frequency of the effect diluted the effect.

So I think Flenniken (or the idea you derived from what she said) is wrong, because if every line contains a surprise, then no line is surprising anymore.

An analogy: if every paragraph in an essay contains a rhetorical question, then the rhetorical effect of the questions will dissipate.

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CODA: One kudo to anyone who identifies the quotation in the title of this post.