"The most sensitive frequencies are at the resonant frequencies of the auditory canal. In other words, the ear has shaped itself to naturally amplify certain bandwidth. And that corresponds to sounds in that bandwidth that were most important to our evolving ancestors to hear, in order to survive. And it doesn't match the human voice. It matches birdsong."

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While all societies make their own imaginaries (institutions, laws, traditions, beliefs and behaviors), autonomous societies are those that their members are aware of this fact, and explicitly self-institute (αυτο-νομούνται). In contrast, the members of heteronomous societies attribute their imaginaries to some extra-social authority (i.e. God, ancestors, historical necessity)

— Cornelius Castoriadis