George Berkeley

The Italians are very unmusical. If I go to a Protestant church in London or Amsterdam or listen to a black choir, I hear four-part harmony. Italians could never do that. In Italy, we all have to sing the melody because we cannot harmonise.

By irreducibly complex I mean a single system composed of several well-matched, interacting parts that contribute to the basic function, wherein the removal of any one of the parts causes the system to effectively cease functioning.