Necessity is characterized as the Errant Cause. Jowett translates planoumenai aitia as ‘variable cause’; Thomas Taylor, as ‘erratic cause;’ and Plato’s commentators use, for the operations of this principle, such words as: rambling, digressing, straying, irrational, irresponsible, deviating, misleading, deceiving, irregular, random.
Hillman establishes the full philological and philosophical range of the Errant Cause, identifying it with Ananke and cataloguing its defining attributes as deviating, irrational, and resistant to rational persuasion.
, Mythic Figures, 2007thesis