Our trainings teach the power of threes: three elements of being unique, three segments to a speech and even three days of training. This article is insightful, comprehensive and....dare I say....fun!
Thank you Jeff Berardi for sending this to me!
The phrase rule of three is a Rorschach test. When people hear it, it can conjure an array of disparate guidelines. Celebrity deaths. Rhetorical technique. Aesthetic pleasure. Free markets. Joke writing. There are so many rules of three across disciplines and superstitions that the concept requires its own disambiguation page on Wikipedia, which lists 17 different options.
https://www.theatlantic.com/health/archive/2019/08/the-correct-number-of-desk-beverages/595927/