In a recent talk at Harvard University, Felix Frankfurter Professor of Law Cass R. Sunstein argued that lack of ideological diversity can lead to more extreme views. That is, the more people discuss ideas and topics only with people who agree with them, the more polarized those ideas tend to become. Although Sunstein's presentation focused on issues of law, the idea that diverse viewpoints can soften hard-line stances and positions can be easily extrapolated into other areas, and makes a good ...