The key answer of exercise 14

Stacy’s speech is also very good, she uses rhetorical devices to be persuasive (e.g. rhetorical questions, comparisons such as the cost of a lottery ticket with the cost of an ice cream; claiming to agree with Zak in order to make a contrasting point). However, she doesn’t have many serious points to make in support of the lottery, so her arguments rely on ridiculing and dismissing Zak’s points 

(Sad – but, sadly for him, also rather misleading ...; I’d be interested to hear the source of that figure – dubiousstatistics.com, I’d imagine. With the greatest respect – that’s complete rubbish!).