Person and number are tied together in a very widespread distinction, not applicable in the singular, between first person ‘inclusive’ (speaker, adressee, and perhaps others) and first person ‘exclusive’ (speaker and others but not hearer).
- Hockett (1958), Pag. 234

This generic category sorts out entities relative to the speaker (‘first’ person) and the adressee (‘second’ person). In the more familiar languages, anything other than speaker or adressee is simply ‘third’ person.
- Hockett (1958), Pag. 234