 Two other Pyrrhonian concepts are updated by the neo-Pyrrhonist in the positive part: haíresis and zétesis. According to Porchat, neo-Pyrrhonists have a doctrine or “a skeptical view of the world”. This skeptical view of the world is an elaboration of how things appear to neo-Pyrrhonists. Skeptical discourse should be understood as an expression of phenomena. Thus, neo-Pyrrhonists may articulate explicitly their own view of the world. Since most phenomena are common, especially those that concern philosophical issues, neo-Pyrrhonists will try to make explicit our ways of thinking, at least as they see them. However, each skeptic will have his or her own skeptical view of the world, since this view depends also on the circumstances in which they live.