I don ' t see why science , reason , and communism have to be mutually exclusive . The most brilliant people in this world who have spent the most time thinking about political systems still haven ' t come to any clear conclusions on what ' s definitively good or bad under different circumstances when it comes to political and societal systems , so is it really fair to say that science and reason is for or against any theory that has intelligent , articulate defenders ? Political and societal systems are so complex that on some level science and reason seems to me to be more like a tool you can use to analyze them and less like a stance that has to match up with a particular belief , though it can ideally be used to rule out obviously flawed ones thinking of climate change denialism here , though arguably even that stance could be defended using science and reason albeit poorly .