Here's an example.
"So why do we only hear bad news? Adam Smith knew.'A continued Series of Prosperity,' he taught his rhetoric students, 'would not give us near so much pleasure in the recital as an epic poem or a tragedy which make but one continued Series of unhappy Events.'
In the rhetorical marketplace nothing succeeds like failure."
Read more about Virginia's theory of "Dynamism", and other iitems of interest at her Blog.