Yet their error in classifying sophistry is like their error concerning it in general. They state that some people deny and reject all knowledge, while others doubt and say, “I do not know”; they call them “those who feign ignorance” and “agnostics.” Others maintain that realities depend on beliefs. They then say that some acknowledge only sensory knowledge, while others also accept knowledge conveyed by mass-transmitted reports. They claim that the leader of these people was a person called Sufastā, after whom they were named, just as the Manichaeans were named