I would define the poetic effect as the capacity that a text displays for continuing to generate different readings, without ever being completely consumed.
“There will one day spring from the brain of science a machine or force so fearful in its potentialities, so absolutely terrifying, that even man, the fighter, who will dare torture and death in order to inflict torture and death, will be appalled, and so abandon war forever.”
“But more important than personal awards is winning the World Series. That's the max that anyone could ask for. Let alone to have the ball in your in your glove for the final out of the World Series. That was the ultimate.”