Rule of Three is a guideline to adopt when mentioning multiple things, try to distill them into three. The rule of three is a very general rule in speaking and in writing,. The rule or rather guideline states that a list of things can and should be presented in threes. And frankly if you have more than three, modify one of the terms in the group of three to include the fourth for skip it. You probably don’t have to list it. Your presentation has to be clear, concise and credible. See!! The rule of three. Clear, concise, classy and credible just doesn’t do it. The fourth just messes up the rhythm of the phrase.