If facts, logic, and scientific procedures are all just arbitrarily "socially constructed" notions, then all that is left is consensus--more specifically peer consensus, the kind of consensus that matters to adolescents or to many among the intelligentsia.
孔子说:“有益的朋友有三种,有害的朋友有三种。与正直的人交朋友、与诚实的人交朋友、与见多识广的人交朋友,有益处;与走邪门歪道的人交朋友、与谗媚奉迎的人交朋友、与花言巧语的人交朋友,有害处。”
Life is 10% what happens to me and 90% how I react to it.