The term 'Human Digits' is a reference to the ancient Greek concept of dactyls, which are poetic feet consisting of one long syllable followed by two short syllables. Dactyls were used in classical poetry and are still used in some modern poetry today. The term 'Human Digits' is a metaphor for the way in which the dactyls are structured, as the long syllable is analogous to the thumb and the two short syllables are analogous to the other four fingers.