The document discusses the impersonal pronouns "you", "one", and "they" which can refer to humans in a generic sense. It notes that these pronouns allow generic readings and only refer to humans. Examples are given showing how "one" and "you" can mean "any person" or "people in general" in sentences like "One should always be polite" and "How do you get to 5th avenue from here?". The document also discusses how "one" is used in more formal or British English compared to American English forms.