why do you think timing is important when you are building a persuasive case?
http://www.google.com/search?hl=en&rlz=1C1GGGE_enUS379US379&q=order+of+importance+in+persuasive+essay&oq=order+in+persuasive+essay&aq=1bK&aqi=g-bK3&aql=&gs_l=serp.1.1.0i8i30l3.38576.39309.0.45424.5.5.0.0.0.0.140.552.1j4.5.0...0.0.BJJZi8LRGt8
Timing must mean the order in which you put your paragraphs in such an essay. What you want to do is to save your most powerful point for almost the end, just before the conclusion. Why do you think that's so?