"According to Hoyle" is an idiomatic expression that refers to a standard set of rules or practices. The phrase originally meant a book written by Edmond Hoyle in the early 18th century, which laid out the rules of popular card and board games. Today, the term can be used to describe anything that adheres to a specific set of guidelines or expectations. There are many synonyms for the phrase, including "by the book," "standard operating procedure," "protocol," "according to tradition," and "conventional wisdom." Whether it's in business, academia, or everyday life, following the rules is often seen as a sign of respect and professionalism.