1. P.A.C.C. is needed to convey different messages that show all sorts of different emotions and context. Allowing for people to communicate in different ways, demonstrating the depths and emphasis on their content.
2. I would say that I did not think they were wrong but I had a different point of view and would have appreciated if they would spend some of their time considering my idea and correcting me if I was wrong.
3. It may cause the listener to interpret the message wrongly and cause unnecessary mis-understanding.