The numerous examples in the third chapter of the book (from changing words in Agatha Christie's books to reacting to Rolling Stones’ song lyrics and restricting freedom of expression in European and American universities) suggest that political correctness is a major constraint on freedoms of expression, art and science. While the starting point of political correctness could be characterized as positive (in the sense that it is not allowed to offend the other person because of their difference), its application in practice often leads to uniformity, the elimination of diversity and the inability to express different opinions. As Nick Cave has observed, political correctness's “once honourable attempt to redefine our society in a fairer way now embodies the worst aspects religion has to offer (and nothing of its beauty)”.