Answer: is compelled to recount terrible and frightening events.
Both Dante and Boccaccio have chosen to discuss frightening, difficult events that they believe will cause sorrow to the reader. However, neither one of them feels they have a choice in the matter. They feel it is their responsibility to inform readers of these events. Boccaccio discusses the plague that has killed a huge percentage of the population of Europe. Dante, on the other hand, discusses his journey through Hell, Purgatory and Paradise, and describes the people and punishments he finds there.