In one of the OPP lectures, I guess I was being a bit to argumentative. However, there is some perspective towards the questions I never thought of. The thing interested me is the learning generated from the discourse. Discourse is one of the instruments to explore knowledge in some social science. I guess this is somewhat similar to the notion Paul used, "constructive critique". Some people also believe diversity is a key to create innovation, creativity, and competitive advantages. I suppose, diversity certainly will make certain scope of discourse rather than simply compliance. In the discourse, different perspective can be explored, a deeper understanding will be formed, hence more structure or insight of knowledge is built.