I really don't know which concept to pick up, because there are so many interesting ones and all of those require some further discussion. Each chapter has one part that is common, that part is called "Becoming more responsible communicator". I believe that it is the only most important concept that requires further discussion. The main purpose of our study is to become more successful in communication. Even though we learn new concept we still will be facing the same dilemma which is how to become 100% successful...