What is the rule of three principle?

The rule of three is a writing principle that suggests that a trio of entities, such as events or characters, is more humorous, satisfying or effective than. In its many forms, the Rule of Three, in essence, uses simple three-element patterns to effectively communicate complex ideas. The pattern works because it's short. To reiterate, the narrative principle of the Rule of Three, which suggests that people better understand concepts, situations, and ideas in groups of three.