The dhamma that Buddha delineated is only a map detailing various paths. We, as the travelers, must carefully examine and understand the map... This is comparable to the necessity of a flashlight while traversing an unknown trail in the dark. The course is littered with various intersections and signs, each pointing to a different destination. Some intersections lead to apayabhumi, heaven, or nibbana. If all of this is understood, difficulties will be absent in one's travels.