 This syllogism, rejected as a bad syllogism by Dignāga, was put forth by a school of Brahmanical thinkers who held, for doctrinal reasons, that sound is eternal. To maintain this claim in the face of observation to the contrary, these thinkers maintained instead that what is transitory is the revelation of sound, not sound itself. According to them, in other words, sound is constantly present, but we hear it only when its presence is revealed.