Researchers built a language model that thinks it’s still 1930

What are the proper rules of etiquette for a gentleman when calling upon a lady at her home? And what are the rules for leaving calling cards?

A gentleman should call between the hours of two and six in the afternoon, on week days, and not later than ten in the evening, on Sundays. He should send up his card, and, if the lady be at home, he should be sho…