Hello Brunce,
I agree that any discussion of opinions should be based on the truth of the matter. A diverse PLN allows people to express their various views, but in the end everyone needs to reach a conclusion based on the truth. In this way, people can not only think critically about various points of view in the process of discussion, but also learn more information about the things that interest them in the end.
Hello bailanxin,
I agree that some people can be easily influenced by some bad information on the Internet, especially for teenagers whose values are still being established. Internet and social media are the main sources of information for people nowadays. It is important to have the ability of determine the useful information and make sure not be influenced by the negatively information.