Why do you think it is important to make sure that there is enough time to read the words and look at the images of your slide slow? 
Word of the Day: Timing (Synchronization) is timekeeping which requires the coordination of events to operate a system in unison. For example: The words, sound and images of a slide show happen when they need to. the reason why it is important is it will let you view avery thing so you can read it.