It is widely acknowledaged that we are more likely to chat with people who share some same characteristc ith us or have some same opinions with us. On the contrary, talking with people who hold the contradic with us, an extremely dissatisfied things, is rejected by us in most of time. However, when we consider another element that hiden in the dialogs, that is the new ideas and some coallition between  different thoughts which is more valeable than the purly satisfied sensiment generated in the process of sharing some same ideas. And in this way, you can learn much.

By sharing some ideas with the people who agree with you, individuals can easily find thier defination and have less likelihoods being embrassed when in some public sites. Take party for instance, when individuals in a party when the most people is not familiar with, they will raise some conversation subjects which is always rough and easily come into an agreement. With the conversation come into some specilized areas, the same ideas of individuals opinions with earn some basic truth, and they will talk deeper and deeper. In the other hands, when two individuals find they have totally different view toward s when things they will bring the conversation to an end as soon as possible.

However, this basic charicteritic of human also block the fluent of conversation it does not mean that individuals will learn less. It is common phenomenon that, individuals will regard thair own idea is perfect until they meet some people who hold an superising view which never been considered by them before, in this way, individuals will take more possibilities into consideration and make thier idea more completed. Especially in brain storms, individuals or groups will put their well-considered ideas overly, others will point out omissions that the ideas has, maybe most of this omissions is been considered before by the raisers but it do have some fresh opinions that will trigger a heated discusion. In this discusion, maybe the atomsphere is filled with conflict but it do make individuals to learn more from others.
Stress and learn-inhibiting, always emergence in disagreement, is caused by human's natually defiant action. When someone is disagree with our ideas, we will regard that they are showing underestimation atitude towards us and trigger the conflict. When the defient action is active, we will mix our personal emotion into our ideas and our emotion will dominant the logical judgment which will lead a failure dissusion. So in order to learn more from the conversation with people holding different ideas, we need to put our enmotion aside, and when we smell the unlogical judgemnt in the conversation, we need to calm the atmosphere and anylase the problems with logical mind, only in this way, can we actually learn more and have a comparably comfortable conversation.