Further, discussing about subjects which are controversial enhances the learning. Learning is a process which never stops. It is not so that people learn in schools & colleges and stop learning after that. Throughout our life we experience incidents which enhances our knowledge and these are the experiences based on which we form our views & opinions. Discussing with people who share our views strengthens our confidence in our opinion. It helps to justify & reason with what we think is right. However, there may be a case where our judgement about something is not correct. We might not know all the aspects of a topic. We might form an opinion without knowing whats on the other side of the coin. This is where discussions with people who disagree with us can result to be helpful rather than destructive. Disagreements can not always be wrong, it's just that they have to be done in the right manner.
Moreover, the author also emphasizes that stress can be caused from disagreements. Stress can be caused by a lot of things, but a healthy conversation in which two people do not agree on the same thing can only