The anthropologist Donald Brown has tried to list them all, and they range from aesthetics, affection and age statuses all the way down to weaning, weapons, weather, attempts to control, the color white and a worldview.
Antropolog Donald Brown ih je pokušao sve popisati, i u rasponu su od estetike, privrženosti i starosne dobi, pa sve do odbića, oružja, vremena, pokušaja kontrole, bijele boje i pogleda na svijet.