JONATHAN BARNES ARGUES THAT HERACLITUS'S UNITY OF OPPOSITES DOCTRINE IS LOGICALLY CONTRADICTORY IN THAT IT REQUIRES THE COINSTANTIATION OF CONTRARY PROPERTIES. BUT BARNES RELIES ON RATHER STRAINED INTERPRETATIONS OF THE DOXOGRAPHY. HERACLITUS'S UNITY OF OPPOSITES DOCTRINE IS BETTER UNDERSTOOD AS CONSISTING OF TWO ASPECTS: (1) A CLAIM THAT OPPOSING QUALITIES, RATHER THAN BEING COINSTANTIATED IN ONE THING, ARE RELATED TO ONE ANOTHER VIA A PROCESS OF CYCLIC TRANSFORMATION; AND (2) AN ATTEMPT TO ILLUSTRATE THE LIMITED AND INCOMPLETE PERSPECTIVES THROUGH WHICH HERACLITUS BELIEVED HUMANITY ORDINARILY VIEWED THE WORLD.